Dexter has killed about 117 people according to the Dexter Wiki. He had 45 blood slides in his first box before it was destroyed and now has about 43 slides in his new box. There were also 20 or so victims from whom he didn't collect blood.
Though they play brother and sister in the series, having met on the show, Michael C. Hall and Jennifer Carpenter married on 31st December 2008. They subsequently divorced in December 2010, but continued to work together in the show.
Series star Michael C. Hall revealed he was afflicted with Hodgkin's lymphoma in January 2010, but continued to work on the series. Most of his fellow cast members were surprised by the news, because he had not disclosed his condition during production. Hall is, as of mid-2010, in remission.
Sgt. Angel Batista at times refers to Dexter as "socio" when speaking to him as a friend or in confidence. This is a clever English/Spanish play on words. While "socio" in Spanish means "associate" or "partner", it is also the beginning of the word "sociopath/sociopatico" (in both English and Spanish)
Sgt. Doakes makes comments to Dexter that after looking into his background, he found that Dexter studied Advanced Jujitsu in college (which would possibly equate to a black belt), and that Dexter finished at the top of his class in medical school, but chose blood spatter analysis as his career. This implies that Dexter is a non-practicing M.D., though it's never furthered explored or mentioned thereafter.
Dexter on average kills one person a month, which means he has accounted for roughly 15%-20% of the murders in Miami from 2006-13 (there were anywhere from 59-79 murders a year during that time frame). However, Dexter's murder victims are often reported as missing persons.
The name of the main character, "Dexter," is also a Latin word meaning "right hand." The implied complement is the Latin for "left hand," "sinister," reflecting his hidden dark side. In 2010 author Jeff Lindsay confirmed at a book signing in Edinburgh that he chose the name Dexter because it was the opposite of "sinister", reflecting the character's surface normality.
Dexter's "knock-out" syringe ostensibly contains a solution of what he refers to as M-99 (Etorphine Hydrochloride), an animal tranquilizer more potent than morphine and is used by veterinarians to sedate creatures as large as elephants. The substance can only be legally acquired and administered with a DEA license.
One aspect of the Trinity killer parallels the BTK killer. Dennis Rader maintained a very normal family life and was very active in the Christ Lutheran Church in Park City, KS. Among many positions, he was a deacon and congregation president and Cub Scout leader. Ironically, it was his use of a church computer to send a letters to authorities that led to his being caught.
While most of the shows are set in and around Miami, Florida, the series exteriors are mostly shot in Long Beach, California, with interiors shot at the Sunset-Gower Studios on Sunset Blvd. Second-unit crews shoot additional material in Miami to help add to the realism of the show.
The names Dexter Morgan and Debra Morgan refer to the two laws of De Morgan--valid rules of inference in propositional logic. Informally, the laws are "not (A and B) is the same as (not A) or (not B)" and "not (A or B) is the same as (not A) and (not B)". They describe their mentality towards the existence of each other: Neither Debra nor Dexter can live without the other. Both characters express that several times throughout the series.
Dexter frequently uses aliases that make reference to Bret Easton Ellis books and their film adaptations. These include using "Patrick Bateman" (the main character from American Psycho (2000)) when buying tranquilizers and "Sean Ellis" (reference to both Ellis and Sean Bateman - from The Rules of Attraction (2002)) when seeing a psychiatrist.
The advertisement on Foxtel in Australia promoting "Dexter" was pulled after the South Australian government filed complaints regarding the mention of Adelaide (a city in South Australia) having the highest serial killer count per capita.
Ray Stevenson's schedule with Thor: The Dark World (2013), the sequel to Thor (2011), allowed him only to be in nine episodes, instead of the usual full season the special guest star of the season gets to be in.
In many of the crime scenes where Dexter gathers photographic evidence for forensic evaluation, he uses a Nikon DSLR and a 105mm Micro Nikkor lens rigged with a Nikon R1 twin macro flash kit. This ensemble enables him to shoot extreme close-ups without any shadow detail whatsoever, the preferred end result for such criminal investigations.
Michael C. Hall, who plays Dexter, won the Golden Globe Award for Best Performance by an Actor in a TV Drama and the Screen Actors' Guild Award for Outstanding Performance by an Actor in TV Drama for his portrayal of Dexter Morgan. He was also nominated five times for an Emmy for Outstanding Lead Actor in a Drama Series.
Dexter only wears the color black in the last episodes of the final season (Season 8). He wears solid black shirts with his khaki slacks. His father Harry, who appears to him as his guiding conscience, also wears black shirts in the final season.
David Zayas (Sgt. Angel Batista), Erik King (Sgt. James Doakes) , Luna Lauren Velez (Lt. Maria LaGuerta) and Scott William Winters (Det. McNamara) previously starred together in the HBO prison drama Oz (1997).
Throughout the series, Dexter Morgan primarily wears the colors brown and green in several different hues in his daily wardrobe, including his "hunting outfit": the long-sleeved olive green henley shirt, greenish-brown khakis, and brown boots. His secondary wardrobe colors are hues of blue and purple.
If the theme music sounds familiar, many fans have noticed that it is very reminiscent of the score from The Ipcress File (1965) by John Barry. Season 1: Ep. 12 is titled "Born Free" and features the Andy Williams rendition that serves as a clue for Dexter. This Oscar-winning song was written by Barry (& Don Black).
Erik King, who played the popular Detective Sgt. James Doakes in the first two seasons, lettered in track and field and graduated summa cum laude from Morehouse College. His father was a police officer.
The use of bird's-eye views of coasts and cities from a helicopter has started a drinking game in some places (including Miami, Fort Lauderdale, and other cities in south Florida). Dexter talking about his childhood merits one sip, while a helicopter's view while flying above the relevant scenes merits two sips (the glimpse of a helicopter from below doesn't count).
It's a running gag that Latin first names of some characters puzzle the other ones. The first one is obviously Dexter himself: it means "right-handed and skillful". The second one is Lumen ("lamplight"). The third one is Miles ("soldier"). In this last case, it's weird that Dexter calls it a strange name, since he should surely know of Miles Davis. Another name of Latin origin is curiously that of VInce Masuka. VInce is short for Vincent; "Vincentius" in Latin means "winner".
When dexter has a victim on a table in a "kill room" the clear tape used to hold them down is stuck together so the tape is not sticking to their head. When he uses duct tape, the pieces are also stuck together.
Dexter wears the same wristwatch throughout all eight seasons. It is an electronic 1973 Timex with Speidel Twist-O-Flex band. This watch is rather simple but durable, and aesthetically it does not stand out...which is the image Dexter prefers to portray of himself to others.
According to Jennifer Carpenter, she always knew that Debra was in love with Dexter, and played her with that in mind from the beginning of the series. So she wasn't surprised when that storyline was introduced.
Of the twelve people who know Dexter's secret, only two have survived--Hannah McKay and Lumen Pierce. The 10 people who did not survive are: 1. Harry Morgan, 2. Brian Moser/Rudy Cooper, 3. Sgt. James Doakes, 4. Miguel Prado, 5. Debra Morgan, 6. Dr. Evelyn Vogel, 7. Zach Hamilton 8. Lila Tournay 9. Captain LeGuerta, 10. Camilla Figg (who hinted in her final minutes that she always knew Dexter's secret).
Edward James Olmos was reluctant to accept the role of Prof. Gellar because of the use made of religion, something really important to Olmos himself. When the producers told him the twist, he changed his mind and decided to play him because now his take on religion was justified as the ramblings of a sick mind.
In the final episode of the season 4 finale "The Getaway" at the end of the episode where Dexter has Arthur Mitchell on the table and prepares to kill him, Dexter is talking to Arthur on what the alternative to being a killer and destroying youR family would be, and Dexter asks, "Is faking your death and starting over with a new identity a better alternative?" This is irony and foreshadowing, for at the end of season 8, the series finale, Dexter does just that: he fakes his death and moves far away and takes up an unknown identity as a lumberjack and lives alone."
There are subtle differences in the Sgt. Doakes character in the television series and in the "Dexter" novels: On the TV series his first name is James and he served in a special Reconnaissance Unit with the Army Rangers prior to becoming a Miami cop. In the novels his first name is Albert, not James, and he served in the Marine Corps. Doakes is murdered in the second season by Lila. In the novels he is maimed and handicapped (but still alive) by Dr. Danco, who removes Doakes' tongue, hands and feet.
Dexter is the only character on the show to never date a co-worker. All of the other primary characters have dated co-workers / colleagues or people they worked with in some capacity. His father Det. Harry Morgan dated his criminal informants (prior off-screen). His sister, a detective, Debra, dated Detective Quinn and Agent Lundy. Det. Angel Batista dated Lt. LaGuerta and undercover Officer Barbara Gianna. Lead CSI Vince Masuka dated his intern Ryan Chambers. Lt. LaGuerta showed a romantic interest in Dexter during the first season, often flirting with Dexter, but it privately annoyed him and nothing more became of it. It could be alluded to that Dexter preferred not to get intimate with anyone he worked with.
In episode 11 of Season 2, "Left Turn Ahead," Doakes is imprisoned by Dexter, and Doakes warns Dexter that his "darkness" will indirectly destroy the lives of Debra, Rita, and Rita's kids. Dexter declares he would never harm any of them, and Doakes warns him not intentionally, but states that Dexter could not control the fates his actions created. This is foreshadowing, for later in the series the actions of Dexter's "darkness " does result in the deaths of both Debra and Rita, and the abandonment for Rita's kids (and Dexter's own son with Rita, Harrison) to become orphans.