Season 1, Episode 0: Pilot20 September 1968
Red Chinese agent Wo Fat uses a sensory deprivation chamber to procure information from U.S. agents. McGarrett, head of Hawaii's state police force, poses as "control," possessor of the names of other agents. He allows himself to be captured and placed in the chamber; will he be able to withstand the torture?
26 September 1968
Five-O investigates multiple cases of missing women tourists. The victims were all recently widowed. It turns out that they are being seduced, swindled and then murdered. Five-O sets up an undercover operation in which a Honolulu Police Department woman officer will serve as bait. The culprits are a married couple. He seduces the victims, she pretends to be his sister.
3 October 1968
A state official is killed by a bomb after arriving from a visit to the Mainland. Five-O discovers the official had more enemies than it initially appears.
10 October 1968
A young singer is kidnapped shortly after a performance. The singer's father is a hotel magnate from the Mainland. However, the crime began as a hoax, and the two kidnappers are friends of the singer. Once the hotel magnate offers a big reward, the friends decide to collect -- at any cost.
Season 1, Episode 4: Samurai17 October 1968
The primary witness before a grand jury investigating a Hawaiian crime figure dies suddenly on the stand. At the same time, assassins from Japan are trying to kill the accused criminal. Five-O has to figure out the accused man's secret and why killers from Japan are after him.
7 November 1968
Dan (Danno) Williams, while off-duty, pursues a gun-wielding crime suspect to the man's apartment. While shooting open the lock, Danno believes he inadvertently wounds the suspect fatally. While attending to the man, the wounded suspect's girlfriend takes a gun the suspect had fired at Danny, and flees the apartment. Danno is soon indicted and jailed. McGarrett races to find the woman and exonerate Danno. It is later discovered that she is connected to Big Chicken, a narcotics dealer in Honolulu.
14 November 1968
Five-O investigates a gold-smuggling ring. One young woman is already dead as a result of the gold smuggling. Five-O and the U.S. Treasury Department devise a sting operation aimed at nabbing Johnny Fargo, a brash operator, and the wealthy attorney who is the brains behind the operation.
21 November 1968
During a high speed chase, a woman jumps from the car the police are after. McGarrett arrives as she is dying. Her last words are, "The ways of love." She was also wearing a diamond earring that was part of the crown jewels of another country stolen while in Hawaii. At the Caro woman's home, there is a letter addressed to Dave Barca, housed in a California jail. Barca was in Hawaii a few days earlier, during the time of the robbery. McGarrett goes undercover, posing as another prisoner at the jail in California. Meanwhile, Dan Williams and other officers find specialized X-ray equipment in the now-abandoned car involved in the chase. It turns out the thieves used the X-ray equipment to discover the combination of the safe that housed the jewels. Now, it's up to McGarrett to use Barca as a way to find the jewels.
5 December 1968
McGarrett is investigating a cat burglar who pulls off jobs in spectacular fashion. His most recent heist totaled $30,000 of jewels from a room in a high-rise hotel. The culprit is Joey Rand, a lounge singer who's also a compulsive gambler who owes a Mainland syndicate $200,000. His girlfriend, who works for a company that does tours, supplies Joey with the names and room numbers of well-to-do people. Joey is now the target of a determined McGarrett and the syndicate that's ready to kill him over the singer's gambling debts.
12 December 1968
A U.S. serviceman, in Hawaii for R&R, becomes a pawn in a fight for control of a numbers syndicate. The head of the outfit, Philip Lo, is killed and the serviceman has been framed for it. McGarrett & Co. race to solve the killing, shut down the numbers syndicate and prevent the serviceman from becoming the next homicide victim.
19 December 1968
McGarrett is gunned down during his morning run on the beach. While the lawman is in critical condition, Dan Williams leads the investigation. Shortly thereafter, another man is killed and Five-O probes whether the two incidents are related. It turns out they are -- and the state Attorney General may become the next victim.
Season 1, Episode 11: Deathwatch25 December 1968
An assistant district attorney is killed when he finds a ''bag man'' rifling through the attorney's office on a Sunday. The assistant DA was preparing to prosecute Matsukino, a local mobster. The key piece of evidence, a handgun, is now missing. McGarrett brings in Matsukino and his right-hand man, Cardonus. McGarrett does a bit of psychological game playing by letting Matsukino go and keeping Cardonus in the lawman's office. The Five-O leader reminds Cardonus that Matsukino doesn't like to leave loose ends. After Cardonus is released, his car blows up. Cardonus, knowing that Matsukino wants him dead, goes to Five-O. McGarrett wants Cardonus to testify at the upcoming trial. The question is whether Five-O can keep Cardonus alive to make the court date.
1 January 1969
A young woman student from Indonesia is killed at an educational institute. Footprints at the crime scene indicate a large man was present. Five-O comes up with two suspects: her American boyfriend and a mentally challenged man, Benny Apa. Neither case is airtight. The boyfriend had an argument with the dead woman shortly before she died. Benny Apa confesses to the killing but McGarrett can't be sure if he knows what he is saying.
8 January 1969
A returning soldier that saw combat in Vietnam returns to Hawaii and has a severe flashback that leads to him taking over a hospital including Dan-O as a hostage.
Season 1, Episode 14: Up Tight15 January 1969
Dan Williams is unable to prevent a young woman high on drugs (referred to as speed but which have the properties of LSD) from jumping off a cliff to her death. The incident puts Five-O on the trail of Professor David Stone, who was kicked out of "a Mainland university" for enticing students into using drugs. As McGarrett is building his case, the death woman's father confronts Stone and forces him to take a large dosage of the drug. Stone ends up on the same cliff and now McGarrett attempts to save his life.
22 January 1969
A dying man is discovered on a beach. A mysterious motorcycle rider takes the man's identification and speeds off. The man has bubonic plague. Five-O races to contain a potential plague outbreak and discover what the motorcycle rider is doing. McGarrett & Co. uncover a plot by a Chinese operative to steal a U.S. night-vision device under development at a U.S. military base in Hawaii.
Season 1, Episode 16: The Box29 January 1969
In Oahu State Prison, cons led by Big Chicken want to bring Swanson to heel because he doesn't show enough respect for "the system." But Swanson manages to shoot one of his attackers with guns the cons had smuggled into the prison. Swanson gathers up prison guards as hostages to try to get out of the prison. Swanson says if he's not let out, he'll start killing the hostages. McGarrett offers himself up as a hostage to try to head off bloodshed.
5 February 1969
McGarrett receives a cryptic letter and a photo of a woman with an "x" drawn through it. The woman was stabbed repeatedly. Later, another is killed the same way and Five-O gets another letter. The victims both worked at the same company, Hawaiian Amalgamated Industries. The company is headed by the headstrong Martha, who employs two nephews, Arnold and Charlie. The killings are a ruse, intended to create the impression of a psychopath killer on the loose. In reality, the killer is Charlie and he kills Martha so he can inherit his share of her estate. He also stabs himself to make it appear he was a target of an attack. But Martha's will has Arnold take over running the company and a relatively modest trust for Charlie. The development spurs Charlie to try to kill Arnold and frame him for the killings.
12 February 1969
Joey Kalama, son of police detective Phil Kalama, nearly goes down in a boxing match then comes back to win the fight. Later, he is beaten by two thugs and dies. McGarrett & Co. investigate the death while trying to rein in Phil, who is also probing the case. The heat is turned up on Five-O after Joey's manager falls to his death accidentally while Phil was trying to question him.
19 February 1969
McGarrett's sister, whose infant son is dying of cancer, has fallen under the sway of a medical quack. Her husband is afraid to confront her. Instead, he summons McGarrett to their home in Los Angeles. McGarrett enlists the aid of U.S. Food and Drug Administration officials in prosecuting the quack. However, McGarrett's sister refuses to believe her big brother. When the child dies, the sister turns against McGarrett. As the trial begins, it is disrupted by followers of the quack.
26 February 1969
McGarrett, desperate to convict medical quack C.L. Fremont, seeks evidence where she can be prosecuted for a more serious charge. Facing extremely long odds, he convinces the family of a former Fremont patient to have the body exhumed. However, the casket wasn't airtight. McGarrett and Zipser, an attorney for the U.S. Food and Drug Administration, instead manage to trip up Fremont in court. The maneuver causes McGarrett's sister to realize her brother had been right all along.
5 March 1969
The leader of a band of protesters is killed while confronting the general of a foreign nation. Authorities initially believe it was an assassination attempt on the general's life. Five-O, however, turns up leads that the lead protester was the intended victim of the killer. McGarrett & Co. probe the backgrounds of the other protesters. While the young people protested for peace, it turns out some of them did have motive.
Season 1, Episode 22: Six Kilos12 March 1969
Five-O intercepts a "box man," an expert safe cracker, at the Honolulu airport. The criminal is killed by a shot from Dan Williams, who fired just before the criminal would have shot Chin Ho. The man had $20,000 and instructions to check into a hotel on Hilo. McGarrett goes undercover, posing as the box man. The lawman finds himself involved in a conspiracy involving two other criminals, Swanson and Andre, as well as a woman. All claim to know nothing about "the Man" who is sending them instructions. Eventually, McGarrett discovers the target of the plot -- a yacht where a diplomat of another nation is staying which has six kilos of heroin in a very secure safe. (This episode apparently takes place before episode 1.16, "The Box," where Swanson appears as an inmate in Oahu State Prison.)
19 March 1969
At the request of the Governor, McGarrett investigates recent odd behavior by Sam Kalakua. Sam, a friend of the Governor's and a distant relative of Kono's, is also among the last of descendants of Hawaiian kings. Sam says he saw the Hawaiian goddess of fire, Pele coming for him and fired a gun in defense. McGarrett ("I'm a man of this century") doesn't believe in Hawaiian gods but also thinks that Sam is not senile or imagining things. Sam's closest relative is his nephew George, who is married to Eleanor, who yearns for a jet set life. The couple are aligned with a real estate developer who has designs on Sam's estate and a film maker who's an expert in special effects. When she can't get Sam committed to a mental institution, Eleanor decides it's time to kill Sam.
4 June 1969
The series pilot, which originally aired as a two-hour TV movie, is re-edited as a two-part episode of the series. In the opening installment, a U.S. intelligent agent, a friend of McGarrett's, turns up dead on a Honolulu beach. McGarrett, knowing the man didn't swim, decides to investigate the death as a homicide. Five-O gets no cooperation from the Feds, making McGarrett suspicious. His probe eventually leads to a mysterious ship, which is in dock for repairs. Going undercover as a member of a repair crew, McGarrett discovers a futuristic-looking chamber.
11 June 1969
McGarrett goes to the Governor with news of what he's uncovered in his investigation. The two agree the matter is too big for any state or local law-enforcement agency. The Governor contacts Jonathan Kaye, who oversees U.S. intelligence activity in the Pacific Rim. Kaye recruits McGarrett as part of a risky operation. The lawman will be programmed to impart false information under interrogation -- and U.S. intelligence will leak word that McGarrett knows the identity of "Control," the man who has direct supervision of U.S. agents in the region. McGarrett, as planned, is captured and subjected to Wo Fat's "cocoon." He also uncovers the traitor who has been helping Wo Fat.
24 September 1969
In a show with several similarities to the previous season opener, a series of swindlings are covers for serial murder. An Army sergeant who lost his brother in Vietnam because of the latter's infatuation with a bar girl, uses Honolulu bar girls as patsies to "marry" dead soldiers and collect on their $10,000 apiece insurance policies -- then murders them and keeps the money. The sergeant is absolutely coldblooded and utters the episode's title when his partner (who has been forging the marriage certificates and the insurance papers) has a heart attack and can't get to his nitro tablets. An unusually violent ending. From this point, all series closing credits are played over shots of men paddling an outrigger canoe through the ocean (replacing the first-season end title of a flashing police light on a car driving through Honolulu); the color and size of the credit cards is also altered.
1 October 1969
Nagata escapes from a mental institution, thinking it is December 1941. He had been part of a group called Black Dragons, a Japanese group that engaged in "fifth column" activities. Nagata upon escaping kills a guard, steals dynamite and constructs a time bomb. It turns out Nagata was supposed to blow up a fuel-storage facility at Pearl Harbor. McGarrett & Co. race to stop Nagata who also has his grown daughter, who he has mistaken for his wife, as a hostage.
8 October 1969
Wo Fat returns. His men break into a center and send out a false tsunami warning. This provides cover so other of his operatives can kidnap a scientist. However, it turns out the scientist is a diabetic who requires insulin shots. This complicates Wo Fat's plans to remove the scientist from Hawaii. Five-O races to prevent Wo Fat from succeeding.
15 October 1969
A businessman at a convention in Honolulu decides to indulge himself just a little bit more and plans a one-night stand with a prostitute. When he gets to her apartment, he hears a knock on the door and is told to hide on the terrace. The woman's new guest is a brutal mobster who throws her off the balcony to her death. The businessman has a Hobson's choice of reporting the crime and facing repercussions from his Kiwanish-like home town, not reporting it and having a guilty conscience, or what actually happens -- he doesn't report it, but the mobster's goons figure out there was a witness to the crime and go after him anyway. Will the businessman 'fess up to his indiscretion (pretty rank even now, think about what it was in 1969) or face getting blown away by a shotgun in a parking garage (which is just what happens at the two-thirds mark of the show; they miss but plan to try again)?
22 October 1969
A group of revolutionaries from a Latin American country have entered Hawaii illegally, raided an armory and stolen weapons and ammunition. Their leader is wounded and captured by McGarrett but his men manage to whisk him away from the hospital where he is being held. However, the leader, who has lost a lot of blood, will die without further medical attention. Five-O attempts to recapture the leader and stop the weapons from leaving Hawaii.
29 October 1969
Five-O investigates a spy ring. One of the suspects is Dr. Paul Farrar. However, unknown to Five-O, Farrar's superior is Wo Fat. Farrar plans a death trap for McGarrett.
5 November 1969
A federal agent is murdered on a plane bound for Hawaii. The investigation of this crime leads McGarrett and Five-O to uncover a terrorist plot by Dr. Erich Stoss to distribute a fungus that will wipe out the Hawaiian sugar cane crop, thereby destroying an industry and thereby forcing the U.S. and other countries to buy sugar from non-U.S. sources.
12 November 1969
A group of college students devise a plan to break into Bishop Museum and steal King Kamehameha's cloak. A collection is started up and amnesty will be given if the cloak is returned. Meanwhile Five-o investigates and concludes that the college students stole the cloak. Kono tries to reason with one of the students, who is Hawaiian, and make him understand how wrong it was to steal the cloak. The others decide to keep the cloak rather than collect the reward. The Hawaiian student [Johnny) comes to Five-O headquarters and tells McGarrett that the others are planning to dump the cloak overboard from a boat. The Five-o team shows up at the pier as the boat is leaving, and the students raise the cloak on the boats mast.
19 November 1969
McGarrett receives a phone call from a woman in Singapore saying that she can witness against a local mobster. McGarret immediately flies to Singapore to retrieve her. The mobster in Hawaii knowing that the girl can finger him, has a contract put out on both McGarrett and the girl. Unable to get to the airport, they board a ship bound for the Philippines, where their lives are threatened again. As Chin Ho arrives in Manila, another hit man is waiting for them.
26 November 1969
A state investigation centers on Mike Finney, a former racketeer who hasn't violated the law since moving to Hawaii nine years earlier. But Charles Irwin, an ambitious counsel for a state legislative committee, sees the probe as a way to further his political ambitions. For Five-O, the case begins when there is an apparent attempt on Irwin's life. McGarrett, who knows Finney, is also a target of Irwin. Meanwhile, the "syndicate" on the mainland, nervous that Finney is being investigated, sends a hitman to Hawaii to kill Finney.
3 December 1969
A emergency landing in Hawaii of an Asian dictator causes major problems for Five-O and McGarrett.
10 December 1969
Just as the ransom money has been delivered, the kidnap victim escapes; one of his two kidnappers falls to his death trying to chase him. The surviving kidnapper concocts another scheme: he holds the ransom money (which is hot) hostage and tries to coax the kidnapped boy's greedy father into laundering it for him. The kidnapper, an accomplished scuba diver (the source of the episode's title) plans to swim underwater to and from the dropoff point. Five-O identifies the kidnapper and tails him, at one point donning frog masks in an attempt to rub his nose in his activities, but the kidnapper relies on the father to shake any tails and deliver the money to him at 25 cents on the dollar, the standard rate for laundered money. It sounds like a great bargain for the father and he holds up his end of the deal -- but that's not the end of it.
17 December 1969
Jo Louise, a rich and spoiled heiress, is recklessly pitting two suitors, Craig and Billy, against each other. She's devised a game where each boyfriend draws a card and gets points for various stunts. This game has resulted in, among other things, an Army Jeep being burned and a boat sunk. Billy takes the lead by kidnapping a homeless person. Craig then demands the Joker -- 500 points for a kill. He intends to murder the homeless man. Five-O aims to put an end to the game before things reach a tragic end.
24 December 1969
Ossie Connors, a brilliant and ruthless bank robber, devises a complicated scheme to get revenge on McGarrett, who put the criminal away 10 years earlier in what the lawman describes as "my first big arrest." Connors bribes a Five-O snitch to mislead Dan Williams, then has the snitch killed. Before the tale ends, three more people will lose their lives. McGarrett, relying on cop's instinct, resists what appears to be an easy end to the case.
31 December 1969
McGarrett survives a bombing of his car but is blinded. His sight may or may not return. He begins rehabilitation under the no-nonsense supervision of Nurse Lavallo. Five-O's investigation fails to turn up a suspect among known criminals. Meanwhile, McGarrett's attacker is determined the kill the lawman in the hospital where he is undergoing rehabilitation.
7 January 1970
The "lost" episode of Five-O, it has never been made available in syndication. A woman is found hanged to death. The suspect is a young man who uses a yoga technique where someone hangs themselves (but survives). All is not what it appears.
14 January 1970
McGarrett hunts for a local boy whose life he turned around but who got into trouble again after he joined the Navy.
Season 2, Episode 18: Killer Bee21 January 1970
Ted Frazer, a Vietnam veteran, thinks he is cracking from mental strain. In reality, he is being tormented by fellow vet George Loomis. George makes Ted think he is kidnapping children (who George has really abducted). Ted's mother also wants nothing to do with him, increasing his emotional strain. McGarrett & Co. determine there's something wrong with George's story; he has told Five-O he was in Vietnam at about the same time as Ted when, in fact, they served in the same unit. Five-O must determine the motives behind George's lies. The answer lies in an incident that took place in Vietnam.
28 January 1970
A honeymooner is murdered during a rigged game of poker and his brother arrives in Hawaii for revenge.
Season 2, Episode 20: Cry, Lie4 February 1970
Five-O's Chin Ho Kelly is framed as part of a plot to discredit the state police unit. McGarrett & Co., however, turn the tables on the man responsible for the plot.
11 February 1970
Honolulu policeman Lew Morgan appears to be cracking after his wife is killed. Morgan also is an old friend of Five-O's Dan Williams, who takes a personal interest in the case. It turns out that Morgan's wife, Marjorie, had affairs with other men. The lead suspect is Gary Oliver, a criminal who was Mrs. Morgan's latest lover. Morgan kills Oliver, an apparent case of a grief-stricken husband taking vengeance. But Five-O's probe shows the case is more complicated.
18 February 1970
Dr. Royce, a scientist with an expertise that can be used in the underwater detection of ships, is lured by enemy agents and his girlfriend to defect to a foreign power. McGarrett is both helped and hindered by a federal agent named Merrill Carson in trying to prevent Royce from leaving the island with the enemy agents, even as Dr. Royce gradually realizes that he is more a prisoner than a willing defector.
25 February 1970
Alexander Kline, a brilliant scientist who had worked for the U.S. government, creates the Q strain, a bacteria that can wipe out vast numbers of people in a short time. He quit his U.S. position. To protest research into biological weapons, he will use the Q strain to wipe out Hawaii's population. Five-O catches up to Kline but the scientist has already left a vial with the killer bacteria in a place where it will spread.
4 March 1970
Alexander Kline, even under intense questioning, refuses to reveal the location of the vial containing the Q strain. McGarrett gambles that by letting him go, Kline can be convinced to change his mind. Kline has fallen in love with a woman, who convinces him to not follow through with his plan. But, even as he relents, the vial with the killer bacteria is not at the dock where he placed it.
11 March 1970
A jeweler in New York City is murdered after making a paste copy of the "Queen of Polynesia", a valuable and historic emerald about to be donated to the State of Hawaii. The 5-0 squad suspects that a switch might be planned at the unveiling ceremony. Jewel thief Janet Kingston, under the pseudonym Camilla Carver, and her sidekick Michael develop a scheme to get into the unveiling when Michael observes one of the invited guests, former Broadway star Thurman Elliott, stealing a diamond bracelet at a society party. Carver and Michael blackmail Elliott into taking her to the unveiling, set at the lovely Makaha Inn. When the "Queen of Polynesia" is brought out, Carver drops the Hawaiian girl wearing it with a poisoned rose, switches it for a paste copy, and then slips the real gem to Michael, posing as a waiter. McGarrett and the 5-0 team are immediately onto the scheme and seal the hotel. They interrogate Carver, and she tries to use Elliott's cute granddaughter Amanda to slip the emerald outside to Michael, now disguised as a cop. But Amanda struggles with him, attracting McGarrett's attention. McGarrett bring to fleeing Michael's car to a halt with a helicopter and the heist is foiled.
16 September 1970
Wo Fat brings in an assassin to kill a man who made a tour of Communist China and got a good look at its nuclear facilities. The spy freaks out and runs just before the sniper pulls the trigger, and it takes three shots to bring him down. When the man is still alive with a bullet next to his brain, Wo Fat and his goons contact the top neurosurgeon in Hawaii with a request to make sure the spy dies on the operating table. To ensure his "cooperation," the goons kidnap the doctor's daughter and hold her on a boat. McGarrett and a Federal agent embark on an elaborate case of counter-espionage to trick Wo Fat into going back to Peking/Beijing and getting the Party bosses to tear down their nuclear reactors -- and to find the girl, her kidnappers and the mole who tipped off Wo Fat in the first place.
23 September 1970
A deadly strain of heroin hits the island.
30 September 1970
A German journalist, in Honolulu to interview an exile from the Greek military junta's rule, is shot down as he exits the airplane. The journalist survives, but barely, as the bullet came within an eighth of an inch of his heart. The exile, a doctor, takes an interest in the case and secretly moves the journalist into his fortress-like mansion to take care of him himself. But McGarrett becomes suspicious as various details to the shooting don't add up, and comes to think the shooting was a setup for a very different assassination attempt.
7 October 1970
McGarrett is awakened at 3:00 A.M. by a phone call from a past girlfriend, who hangs up before he is fully awake. The girlfriend then goes back to her husband's beach house and finds him dead from multiple blows to the head. Pieces of evidence around the crime scene implicate the woman, and eventually McGarrett is forced to arrest her (amid numerous flashbacks to their romance when McGarrett was a Navy lieutenant -- there are scenes filmed at the U.S.S. Arizona memorial where the woman's brother drowned on December 7, 1941). But not only does McGarrett have to fight his own emotional involvement, he has to check out at least three other possible suspects in the killing: the husband's law partner, his daughter from a previous marriage and the daughter's hot-shot attorney fiancé' who knows a great deal about crime scenes.
14 October 1970
A Russian musician is planning a concert using a priceless violin. After it is locked in the trunk of their car, three derelicts steal the car and strip it. Forcing the trunk open, they see the violin and decide to sell it to a violin teacher. Against McGarrett's wishes, the Russian diplomats offer a $10,000 reward for the return of the violin. The punks steal the violin back and kill the teacher. They decide to ask $30,000 for the return of the violin, which the Russian quickly agree to. When the money is delivered, the men decide to kill the Russian violinist, just as McGarret and his men show up.
Season 3, Episode 6: The Ransom21 October 1970
The young son of a rich man is kidnapped. Five-O and HPD observe the scene where the kidnappers are to pick up the money. Five-O's Kono corners the kidnappers but ends up being captured. He sets the boy free but is beaten by the kidnappers, who now are demanding ransom for release of the Five-O member.
28 October 1970
McGarrett narrowly survives an explosion on a boat that claims the life of a prominent businessman who recently married a second "trophy wife." Five-O's investigation initially probes the motives of the young widow and a lawyer on the rich man's payroll.
4 November 1970
"Respectable" Japanese-American businessmen and the former POWs in camps who recognize their tormentors. In this case, three men reunite at the Ilkai Hotel in Honolulu 25 years after they were liberated from a Philippine prison camp. One of the three is relatively healthy, but another drags himself on crutches with a hopelessly mangled leg and another floats through life with a permanent brain injury. The man on crutches spots a businessman, calls him by a very different name and wallops him over the head with the crutches. The name the man utters is that of the prison-camp commandant, who selectively tortured the three men into losing what they wanted the most. It's not long before things begin to escalate. First, the Japanese businessman is trapped in his car with a time bomb ticking down in the engine. Five-O is on the scene and gets him out in the nick of time, and later figures out the bomb plant was a plot to terrorize him. But then s sharpshooter blazes away at the businessman and the third prisoner, who is tormented by being unable to save the other two. The third prisoner finds eternal peace, but the second prisoner is imprisoned because the rifle is in his room and he doesn't have the mind to explain it. So who is guilty of all the crimes?
11 November 1970
A man arrives on a plane in Maui, and is reunited with his girlfriend. When they get home, another man is seen approaching their home in a suspicious manner. A shootout occurs, leaving the suspicious man dead. The two lovers go on the run. They are pursued by a mobster who had killed a man in the presence of the woman.
18 November 1970
An ex-military demolitions man is drugged and framed for the explosion and total destruction of a sewage treatment plant. Five-O pieces together clues to expose the business man who is actually behind the crime.
25 November 1970
Lewis Avery Filer had been an insurance investigator forced to retire when his company was taken over by a conglomerate. The wily Filer is now pulling daring robberies at businesses either owned or insured by the conglomerate. He utilizes a variety of tactics, including disguises. Filer also is gaining publicity as he outwits the police.
2 December 1970
Two women are strangled and portions of a poem are written, in lipstick, on their legs. The second is the girlfriend of Dan Williams. He is on edge, wanting to work on the case "or else it's going to work on me." Danno, however, beats up a person who knew his girlfriend before Kono and Chin Ho can stop him. It turns out the real killer is Walter Gregson, who really wants to kill his wife (a friend of the two dead women) and make it appear all the deaths were committed by a psychopath.
Season 3, Episode 13: The Payoff9 December 1970
McGarrett receives a call from a Skid Row bum who says he has vital evidence in a mainland case. When McGarrett and Danno arrive at the man's fleabag apartment, he's disappeared, with a trail of blood indicating he was robbed and shot but managed to escape. In his mattress, the investigators find some silver certificates which they recognize were used as ransom money in a mainland kidnapping eight years ago where the victim was murdered and the kidnappers escaped. In the interval, silver certificates were removed from circulation and are therefore now "hot money." Five-O figures out that the man who called them was the bagman for the killers and took off with the loot, and they've finally tracked him down. When a woman spends two $20 certificates at a dry-cleaning establishment, Five-O realizes she's one of the killers, but can't find her yet. They do find the dying man, though, and he tells Five-O that a husband-and-wife duo shot him and took off with most of the certificates -- and that the duo's mainland accomplices, whom they also stiffed, are in Hawaii looking for them as well.
16 December 1970
A prison lifer working in the infirmary as an orderly gets the shock of his life when a dying fellow inmate confesses that he himself committed the murder that the orderly, a businessman on the outside, was convicted of three years earlier. Nobody else heard the confession, and there is no evidence tying the now-dead hit man to the murder. The orderly freaks out and grabs a guard's riot shotgun, tapes it to the throat of the prison doctor and sends out the word -- reopen his case and find the person who ordered the hit, or get the doctor's head on a plate. Skeptical at first, McGarrett soon finds evidence that contradicts statements made at the businessman's trial and renders his "motive" for the murder meaningless. He still doesn't know who could have ordered the hit, though. A professional colleague of suspect, victim and the suspect's lawyer is found to have perjured at the trial -- coached by the lawyer, who DID order the hit. The lawyer's two hired thugs waste the colleague in traffic as he goes to talk to McGarrett, then go after the colleague's wife. The scene switches back to the infirmary, where the doctor persuades the increasingly sleepy convict to cut the tape holding the shotgun, in case it goes off accidentally. The doctor, though, believes the convict's story and refuses to alert guards that he's cut the other half of the tape while the convict was sleeping and now has the shotgun in his own hands. McGarrett, still lacking a firm case, tries to find the business partner's wife -- the last possible witness -- before the lawyer and his thugs do.
Season 3, Episode 15: Paniolo30 December 1970
A Maui cowboy (the episode title means "cowboy" in Hawaiian) kills a real-estate developer who's trying to take over the ranch where the cowboy has worked. The cowboy tries to escape into the island's rugged highlands while McGarrett pursues, trying to get him to surrender.
6 January 1971
A notorious thief is sprung from prison by a criminal gang who wants him to teach them how to rob a diamond exchange and escape undetected. The thief obliges, but McGarrett and Danno are puzzled when the thief -- who ought to be hiding as deep as possible -- is spotted at a drugstore and at a marina.
13 January 1971
A war hero back from Vietnam dies under mysterious circumstances. Was it a murder or a suicide? For McGarrett, finding the truth is no easy matter, as neither the victim's family nor the U.S. Army are willing to cooperate.
27 January 1971
The Chinese (led by Wo Fat), the Soviets (led by Mischa Toptegan) and assorted criminals are all after perfect counterfeit plates. The plates were originally developed by the Chinese, who want to use them to flood international markets with phony U.S. currency and destroy the American economy. Jonathan Kaye enlists Five-O's help to track down the plates and a Navy intelligence officer, and a friend of McGarrett's, also is part of the probe. However, the Navy man is secretly working with Nicole Fleming, one of the criminals after the plates.
3 February 1971
U.S. Commander Nicholson now has the perfect counterfeit plates. His price: $2 million and amnesty for all crimes (including the murder of the man he got the plates from). His girlfriend, Nicole Fleming, is playing the Chinese and Soviets off each other before striking a $3 million deal for herself with Wo Fat. McGarrett and Five-O are running out of time to recover the plates.
10 February 1971
A group of masked men break into the home of an international arms dealer and kidnap his wife. McGarrett soon realizes the case is far more than a simple kidnapping - he's now involved with agents of a foreign civil war.
Season 3, Episode 21: Dear Enemy17 February 1971
A man, who had been a witness in a murder trial, dies mysteriously down at the waterfront. McGarrett thinks he was murdered and that his death was tied to the murder conviction of a formerly prominent politician.
24 February 1971
A young man in Oahu State Prison has been a model prisoner and is let out on parole. A few days later, he appears in Five-O headquarters at the Iolani Palace, taking prisoners and demanding that Dan Williams be brought to him. All of this is transpiring while McGarrett is on the Mainland. Danno has no idea why the man wants him dead. It is not until Williams enters the trap that he discovers the man is the brother of a man the lawman killed in season one's "...And They Painted Daisies on His Coffin."
3 March 1971
Gary Phillips, the mentally challenged son of baseball star Lon Phillips, encounters a woman while on his way to the concession stand during a ball game. She turns up dead shortly there after. Was he responsible? Or does he know who was?
10 March 1971
Gary Phillips, on the run and afraid of the police, narrowly escapes a murder attempt. McGarrett & Co. begin to piece together what really happened at the ball park. But the real killer is still determined to silence Gary.
14 September 1971
Two skeletons, a man and a woman killed ten years ago, are discovered. One of them comprise the remains of the former right-hand man of Mondrago, a prominent businessman. McGarrett concludes Mondrago is hiding something and may have killed his late wife and his former business associate. Mondrago is indeed hiding something, but not what it seems. The key to the mystery is Mondrago's daughter, who looks just like her late mother.
21 September 1971
McGarrett must figure out how to get the goods on a mobster who is trying to clinch a mainland deal while murdering his enemies (including a past girlfriend) and putting them in an incinerator, which wipes out all traces of their existence -- or does it?
28 September 1971
Several women have been strangled in Honolulu. The pattern in all of the cases was that after each killing, the killer would put make-up and a wig on each victim as if he wanted them to look like a prostitute. Also, in each case except for one, the killer seemed to have a key to the house of his victims. However, the one exception was the home of a private investigator who's wife was killed. It is eventually theorized that the killer is looking for a prostitute who he was obsessed with.
5 October 1971
A cagey professor and the syndicate team up on a deadly caper. About $750,000 in traveler checks are stolen in Denver. A planeload of criminals posing as academics board a charter flight to Honolulu, with each given $7,500 in traveler checks to spend. A hit man ensures a woman employee of the Honolulu office of the traveler check company can't get the serial numbers of the hot checks circulated. McGarrett calls the caper a "jigsaw puzzle." The question is whether he can solve it in time.
12 October 1971
Two hippies, panhandling for money, decide to approach a tourist. The first hippie, a young woman, is rebuffed. However, the tourist comes on to the second, male hippie. The hippie freaks out and hits the tourist on the head with a board, taking the man's wallet in the process. The wallet contains a key to an airport locker, which contains a briefcase full of money. It turns out the tourist is an embezzler who will do anything to get the money back.
19 October 1971
A mentally disturbed former soldier buys a new rifle and ammunition after a sales clerk fails to check him out. The soldier even signs his name as "George C. Patton." He then holes up in a spot on Diamond Head and shoots out the tires of a motorist's car and proceeds to shoot two police officers, one fatally. McGarrett coordinates the police response. The more McGarrett finds out, the worse it gets. It turns out the sniper has a weird relationship with his mother. The mother, in turn, denies the former soldier is her son. Time is running out and Five-O must prepare to lead a police assault on the sniper.
26 October 1971
A shipping company which runs lots of valuable cargo through the islands is cherry-picking the most valuable items, taking them out of the shipments, and selling them on the black market. They also have a habit of killing anyone who gets too close to their operation. Their fatal mistake is stealing a quantity of medicine which is the only thing that can save a toy manufacturer's critically-ill wife. When the emergency re-order arrives too late, the husband -- who has been cooperating with Five-O -- goes off on his own to seek vengeance.
2 November 1971
A gang, led by the vicious Hawkins, is executing a plot to steal $6 million. The group includes a bank employee and an alienated, long-time employee of a trucking company. The plan results in multiple deaths. Dan Williams leads the Five-O investigation because McGarrett is having to testify at a trial on the "Big Island."
9 November 1971
The wife of a wealthy doctor is shot to death. The physician seems to have a tight alibi while clues point to another man. But the more Five-O probes, the more the obvious turns out not to be. The suspect is arrested while trying to fence the dead woman's jewelry. But he was dying and had little motive to kill the woman. McGarrett & Co. need to dig deeper to find the truth.
16 November 1971
McGarrett gets a telephone call upon arriving at work. The caller says he intends to kill someone. The caller has also sent the lawman a key that will tell McGarrett the identity of the target. Danny and Kono have received other clues at their homes, one of which is a photograph of Chin Ho's garage. The clues are a mixed bag, including several false leads. The caller continues to taunt McGarrett, finally revealing that the intended victim is the Governor.
23 November 1971
French McCoy, thug for a Miami mobster, turns up dead (stabbed in the chest) and mutilated (one of his pinkie fingers cut off). The mobster, known as "Big Uncle," was looking to move into Hawaii. One of four Hawaiian mobsters is responsible. McGarrett must figure out which one before a gangland war erupts.
30 November 1971
Willy Stone, a punch-drunk former boxer, attacks a young fighter for no apparent reason, breaking the younger man's hands. Edmonds, a Detroit hood, has invested much in the young boxer and is enraged when he finds out the boxer can never fight again. Five-O seeks to find Willy before Edmonds can extract his revenge. Meanwhile, Edmonds has summoned a hit man from the Mainland to kill Willy.
14 December 1971
Someone calling himself "Kahili" (the Hawaiian god of battle) wages his own personal war against polluters. At first the pranks are bad but not dangerous, like climbing a ladder to the top of a huge chimney with a 125-pound ceremonial shield and capping the chimney (thus blowing out the furnace inside and chasing everyone out of the factory). However, Kahili's actions get steadily more violent. After blasting a crop-dusting plane with a shotgun (he pulls the pilot to safety), Kahili types up a list of the five worst polluters in Hawaii and entitles it "Kahili Death List." One of the five suffers a heart attack and another flees, so Kahili goes after the most heavily guarded of the three and breaks his neck with one hand. Can Five-O identify Kahili (whose face is never really seen) and capture him without getting shot or beaten to death?
Season 4, Episode 14: Odd Man In28 December 1971
When famed bank robber Lewis Avery Filer, whom McGarrett put away a year and a half ago, learns that a fellow con about to be released plans to resume his career as a drug dealer, he decides to get out on his own and infiltrate the drug gang. Filer plans to tail the drug dealer and relieve him of the $4 million he's received for cocaine shipments, through use of trickery and gadgetry. McGarrett tries to outwit Filer once again and recover the money before Filer can flee with it.
4 January 1972
A young woman goes onto a balcony in what is thought to be a suicide attempt. However, it is all a plot to lure her fiancée out into the open to kill him and prevent him from testifying against a mobster. After he has been liquidated, McGarrett must now try to prevent the woman from becoming the gang's next victim.
11 January 1972
McGarrett is found in an upside-down car containing a dead crime lord and a briefcase with thousands of dollars. Each step of the frame is perfect and unbreakable. McGarrett figures only man can be responsible -- Wo Fat. Indeed, the Chinese intelligence operative has just arrived in Hawaii. It turns out Wo Fat arranged for a man to undergo many plastic surgery operations to look exactly like McGarrett. The man is caught and fatally wounded as he tries to withdraw money from a Swiss bank. Before he dies, the double says, "Wo Fat bought my soul for 90 seconds."
18 January 1972
Steve returns to Hawaii after discovering the man who was made to look like him in Switzerland. Steve meets with Jonathan Kaye and some other people to find out why Steve was framed. They know Wo Fat is behind it. Steve learns that the only anomaly was their tracking station went out for a few seconds. Steve wonders if that is what Wo Fat is working on because they know that all this about Wo Fat trying to get 90 seconds for something and with their tracking system done for 90 seconds; what could happen? They look at everyone who could have done it, Steve thinks they should look at a scientist named Vogler and they do. They learn that Vogler came to Hawaii because his daughter suffered an allergic reaction to pollen that somehow got to where they live. But the doctor tells them it's impossible for the pollen to be there at that time of the year. So Steve thinks someone made the girl sick so that her father would have to go to Hawaii. Later a Russian agent arrives who gives them some information that helps them. Steve talks to Vogler and he has a breakdown. They then give him a truth serum that's when they learn what's going on.
Season 4, Episode 18: Skinhead25 January 1972
A young woman is savagely beaten and raped outside a bar. The prime suspect is a bald headed soldier, with whom she was seen arguing inside the bar. The jury eventually convicts him based on the eyewitness testimony of a young mechanic who was at the bar that night. However, when his medical report comes back McGarrett begins to have doubts about whether or not he did it.
1 February 1972
A reclusive, Howard Hughes-type billionaire is implicated in the murder of one of his associates. The businessman abducts McGarrett, who was on his way to the scene of the murder. The businessman is afraid of germs and has elaborate decontamination procedures on his yacht. The businessman tells McGarrett that he is innocent and being framed. The businessman wants to sell off his various companies to concentrate on developing a "steam car" that will run on natural gas and have few emissions. The business associates opposed the move and the leading opponent is the one who has turned up dead. McGarrett doesn't trust the billionaire but Five-O's investigation also turns up evidence that the killing was not as simple as it appeared.
8 February 1972
At a birthday party, the guest of honor suddenly suffocates after getting a card saying this is his last birthday. The dead man is one of three partners in a shady real estate business with a reputation for swindling its customers. Five-O's investigation intensifies after a second partner gets a similar threat. When the second partner turns up dead, McGarrett knows he is running out of time to solve the case.
15 February 1972
A convicted murderer escapes prison. He has been threatening a woman, spurring McGarrett to arrive at the woman's home with police officers. As the lawman arrives, the convict calls, telling the woman he will kill her by nightfall. While McGarrett guards the woman, he also probes to find out more about the circumstances that led to the man's conviction. It's clear that McGarrett believes there's more to the case than she has been telling.
22 February 1972
Three seemingly ordinary people are recruited to make a hit on a mob boss from Chicago visiting Hawaii. The hit is done with precision. The killers are equipped with firearms with plastic coverings that prevent shell casings from being left for evidence, for example. Also, the three participants, in effect, provide alibis for each other. Five-O initially thinks this is a professional hit until its probe begins to uncover the truth. McGarrett & Co. must figure out why these three people were so desperate they could be blackmailed into performing a murder. Second, Five-O must figure out what the ultimate goal of the caper is.
29 February 1972
The U.S. Navy cooperated in the filming of this story about a shipboard heroin ring, lending the Destroyer U.S.S. Whipple and having real-life Admiral Joseph McGittrick play a substantial role as the admiral in charge of the Navy's substance-abuse recovery program. With McGarrett in uniform to supervise, Danno goes undercover as a medic treating an addict and trying to get him to produce his supplier's name with an amnesty promise. Several sailors also have speaking roles.
Season 4, Episode 24: R & R & R7 March 1972
A disturbed ex-GI who was dishonorably discharged and then tried to re-enlist under a false name takes revenge at the Military by murdering officer's wives who fly to Hawaii expecting to meet their husbands on R&R from Vietnam.
12 September 1972
Al Harrington's first episode as Ben also introduces Duke Lukela and John Manicote as semi-regulars. Manicote launches an investigation of Five-O when Duke, an HPD sergeant who sometimes joins Five-O on investigations, is accused of being on the take. McGarrett does what would be now called an intensive database search, with numerous records on all Five-O team members transferred to projection slides and put up on the screen (if you can freeze-frame or slow your player to catch all of them, there is a wealth of information on the characters -- including McGarrett's birthday, which is in the wrong month!). Convinced that Duke was set up by someone, McGarrett repeats the process with members of Manicote's office and finds that one of the Assistant District Attorneys is a mole planted long before by the mob to discredit the office. Guest star Michael Ansara, playing the mob boss, forsakes his toupee (he's shown swimming) and is very bald.
19 September 1972
Champion race car driver Alex Pareno arrives in Hawaii to attempt to break the record for driving up Tantalus Mountain. However, his chief mechanic is bludgeoned to death after catching someone tampering with Pareno's car. Later, a second mechanic is killed while test driving the car. McGarrett eventually discovers plenty of suspects ranging from Pareno's fiancée Angela, who was being blackmailed by an ex-lover, to Pareno himself. However, it is eventually discovered that the killer is someone very close to Pareno.
26 September 1972
A sophisticated operation is blackmailing rich and prominent visitors to Hawaii. One of the victims has told Tolliver, a private investigator, about his situation. Tolliver tells his friend that he'll work to get him free of the blackmailers. Meanwhile, a young woman has turned up dead -- which brings Five-O into the case. It turns out she was among numerous women used as bait, but she has become too hot to handle when one of the blackmail victims committed suicide. Tolliver, meanwhile, poses as a rich man to attract the attention of the blackmailers. But he has no intention of ruining the operation. Tolliver intends to take it over.
3 October 1972
During a traffic stop in the boonies, the driver slips out a concealed handgun and shoots the HPD officer down in his tracks. Before dying, the cop gets off a couple of rounds at the fleeing car, causing it to crash. McGarrett and Danno visit the killer in the hospital, where he still couldn't care less about murdering a man ("I chopped a cop ... put a pig in a blanket"). The incident preys heavily on both men's minds, particularly Danno's. Later that same night, Danno witnesses a liquor-store robbery where the masked thief takes a shot at him. Danno follows the thief to a house, but loses him on the grounds. When a person steps out appearing to be carrying a pistol, Danno fires -- and finds to his horror that the young man was an innocent kid living at the house -- carrying a soldering iron. As the wounded boy lingers comatose and in critical condition, McGarrett must try to save Danno's reputation by proving that the robbery did occur and that the robber tricked the shooting victim into walking into the line of fire.
10 October 1972
Operatives working for Wo Fat steal a device from a U.S. military base in Hawaii. Wo Fat is also manipulating a young Maoist into helping him smuggle the device to China. McGarrett and Five-O race to keep the device from leaving the islands. They capture Wo Fat at the last minute. But McGarrett receives a shock courtesy of U.S. spymaster Jonathan Kaye.
17 October 1972
A military scientist is kidnapped by a co-worker and held ransom for one million dollars in diamonds. Five-O identifies unique background noises from the taped ransom messages to locate the kidnapper.
24 October 1972
The slaying of a public health official while conducting an investigation into venereal disease leads McGarrett into the world of politics and intrigue. Starting with an appointment list of the slain official, McGarrett works his way up to a meeting with a highly respected candidate for public office.
31 October 1972
To the horror of workers at a construction site, the truck of sand they are unloading contains Danny Williams in the back, unconscious and just moments away from having smothered to death. Danny awakens, but can't remember anything about how he got there. McGarrett grills the sand-truck driver, but eventually abandons him as a dead end. The only other way Danny could have gotten into the dump truck was to jump in from a height as the truck passed below him. Danny remembers he was going horseback riding on his day off, so the Five-O team heads out to a ranch that rents horses for pleasure rides. Eventually they find the body of the horse he was riding, shot multiple times and leaving a long trail of blood. That means Danny was fleeing from gunmen and made his leap as a last resort. But what did he see that made the gunmen chase him. The answer turns out to be a literal suicide bomber, the ranch owner, who is getting revenge on a Chinese visitor by having a bomb-laden boat (with mannequins at the helm, which is what Danny saw being loaded into a truck headed for the harbor) "steering" it by remote control straight into the man's yacht with the dignitaries aboard. (Presumably the thugs got paid in advance). McGarrett and the Five-O crew must race the clock to destroy the bombers' boat before it can complete the madman's mission.
14 November 1972
Chris Vashon is male heir to the Vashon crime family, which now has considerable legitimate business holdings. The young Vashon, a rebellious sort, has been conducting robberies with friends. McGarrett sees the development as a way of striking back at the Vashons. However, Five-O discovers that's easier said than done, when Honare Vashon, Chris's father, bribes witnesses and Chris Vashon beats the rap in court. McGarrett doesn't give up and attempts to trap Chris Vashon again. This time, Vashon is fatally wounded by the lawman. Honare Vashon vows McGarrett will die.
21 November 1972
Honare Vashon orders a hit on McGarrett to avenge the death of Chris Vashon. McGarrett first receives an anonymous message intended to let him know his days are numbered. Then, Vashon hires a local killer. That attempt is unsuccessful and the killer is liquidated by the Vashons. Honare Vashon manages to evade intense surveillance long enough to hire another killer, this time imported from outside Hawaii. McGarrett knows another attempt on his life will occur. Can Five-O stop it?
28 November 1972
Dominick Vashon, patriarch of the crime family, now wants to go after McGarrett. He devises a frame and McGarrett is accused of shooting an unarmed man. Five-O must break the frame and figure out why a prominent attorney is testifying against McGarrett.
5 December 1972
A group of native Hawaiian separatists threaten to bomb public buildings if seven of their associates are not released from jail. McGarrett races the clock to find the bombs, and those responsible, before the deadline.
19 December 1972
The Lovejoys, a family of grifters, make a bigger score than they ever imagined. The problem is they've ripped off a mobster who wants his money back -- and will gladly kill to do so.
2 January 1973
A hippie couple kidnaps a baby from in front of a drug store and smuggles him to the mainland to sell the child to an adoption agency in Los Angeles. McGarrett and the rest of the Five-O team are able to find that baby as well as another infant that was kidnapped a few months earlier. Now they must track down the young couple before they snatch another baby.
9 January 1973
McGarrett is called in to talk to Toni, a tough-talking young woman who has recently been busted along with her boyfriend. Toni is going to prison and can live with that, but she wants to get married (she's pregnant) before then in an elaborate ceremony. In return, she will testify against a mobster who has always beaten the rap -- "How about murder one? ... With his own two hands?" McGarrett counters that the mobster will use all of his many resources to knock off the couple, but Toni is adamant and McGarrett goes to work with the help of the reporter he's dating.
16 January 1973
A psychiatrist is tormented by a man calling himself Cerberus. Cerberus says he was turned down for treatment and is determined to gain his revenge by extorting the psychiatrist. Cerberus, to show he means business, begins harassing the psychiatrist's patients, including a boy dying of a brain tumor and a suicidal woman. McGarrett & Co. must deal with a cunning and ruthless adversary in Cerberus.
23 January 1973
The No. 2 executive to a reclusive businessman approaches McGarrett. He tells the lawman that he has evidence of illegal activity by his employer. But the executive insists on elaborate procedures for a more detailed meeting, including having McGarrett attend unarmed. The Governor insists that Danny Williams attend in McGarrett's place. While their meeting occurs, the executive also shows up and kills the chief executive of the company. Now, Danno is the executive's alibi.
30 January 1973
Murdock, an embittered businessman, concocts an elaborate robbery to gain the millions of dollars he needs for a pet business project. Murdock, though, has underestimated the ruthlessness of the men he has hired -- two people are killed before the robbery even takes place. McGarrett is determined to crack the complicated case.
6 February 1973
A man named Winkler goes berserk when approached by a television reporter doing a "man on the street" story. After his arrest, Five-O and HPD can find no evidence that Winkler even existed until seven years earlier. For Five-O, this is just the start of a complicated investigation full of shadowy figures and murky motives. Winkler, for example, has a number of aliases and a photographic memory. Eventually McGarrett & Co. uncover a plot to assassinate a Soviet defector.
13 February 1973
Two men kidnap a young girl and hole up in a World War II bunker on Diamond Head. McGarrett and his men must rescue the child from the desperate criminals.
Season 5, Episode 21: Percentage20 February 1973
O'Hara, co-owner of a travel agency with ex-bookie Sam Green, is beaten to death by thugs with brass knuckles. Green organizes gambling junkets, which is draining revenue from a hood's gambling rackets. What's more, one of Green's customers refuses to make good on $120,000 in losses on a junket in Seoul. Green is being squeezed hard by the Hawaiian gangster and the Korean gambling house. Five-O's investigation becomes complicated after the losing gambler turns up dead; the loser was also having an affair with the wife of another customer on the Korean gambling junket.
27 February 1973
Five-O seeks to bust a family-run protection racket. But the investigation turns personal for Five-O stalwart Chin Ho Kelly because his daughter is in love with the son of the racket's patriarch. The probe intensifies after a policeman and the best friend of Chin Ho's daughter are killed. On top of that, the lovers wed.
6 March 1973
A cat burglar robs a former CIA agent of a diamond pendant and a roll of microfilm. The film contains military secrets and soon agents from China and Russia, along with its original owner, begin vying for its possession.
13 March 1973
Five-O and District Attorney John Manicote think they have an ironclad case against a mobster on trial. But the jury keeps coming back with news that they have not reached a verdict. The judge refuses to reveal the vote, but McGarrett correctly suspects that one person is holding out for an acquittal. But who - and why? Five-O obtains a jury list and starts checking out all of them to see who could have been bought, blackmailed or threatened.