McCabe's son whom he hasn't seen because of something he did, comes to see him and McCabe is not ready to forgive him. They then investigate a plane crash and in turns out that it was caused by defective parts. And among the persons involved with the company that sold the parts is McCabe's son.
A young woman is found dead on the beach from a drug overdose. The immediate suspect is her ex-boyfriend, Sonny, so Jake goes pick him up for questioning. But a mysterious gunman is also interested in Sonny, and tries to kill him before Jake can get to him.
McCabe and the son of a friend go fishing, and discover a bomb on the their boat. Unable to disarm it they jump in the sea and swim to a nearby island. Meanwhile Jake and Derek presume they're dead, and go looking for the bomber.
When a friend of McCabe's who is an ex-cop who is now a P.I. is killed when it appeared he was driving while drunk. But McCabe notices some inconsistencies so he has Jake check it out. When Jake goes to his office to check it out he's roughed up a cop, who says he's investigating the man's death. When he tells McCabe about the cop he learns that he's the brother of the dead man's wife. They learn that McCabe's friend was investigating an old case--the murder of woman, whom the man may have been involved with.
Jake and Stg. Danoho (a LAPD cop) are transporting a prisoner to Los Angeles, when the prisoner escapes and Danoho is killed. Danoho's partner, Sgt. Walker, goes to Hawaii to assist in the investigation and it turns out there's bad blood between her and Jake.
A young lady is acquitted for killing her mother, and wants to hire Jake privately to find the killer. Jake turns it down because he's on his way to a vacation, but then McCabe refuses to let him take any days off. So Jake quits his job and takes the assignment.
Jake and the FBI go after Victor Potemkin, a suspected drug smuggler. But when they raid his house they find no drugs, but Jake finds someone he knows - a woman who disappeared overnight just as he was about to propose to her.