Meet Dexter Morgan. By day he's a blood spatter pattern expert for the Miami Metro police department. But by night - he takes on an entirely different persona: serial killer. But Dexter isn't your average serial killer as he only kills people who fit a very prolific and precise "moral code" taught to him by his late father Harry (he didn't kill Harry, honest), and developed very thoroughly throughout each kill. While dealing with his daily activities and his boss, Sgt. Doakes, the one man who may or may not know the truth about his after-hours activities, he is given a friendly message by a guy referred to only as "The Ice Truck Killer" - a crime scene where there is no blood. This shocking discovery turns Dexter's world completely upside down. The Ice Truck Killer wants Dexter to play his game and Dexter is very eager to take on this cat-and-mouse chase throughout Miami.


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Season 1, Episode 1: Dexter
Original Air Date—1 October 2006
Dexter takes part in the investigation of a serial killer who drains his victims of blood. He also kills two criminals, and his romantic relationship may be going to the next level.


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Season 1, Episode 2: Crocodile
Original Air Date—8 October 2006
Dexter's world of police analyst by day, and serial killer by night, is rocked when he's privately contacted by another serial killer, whom the department is investigating, who claims that the killer knows about Dexter's double life. Meanwhile, Dexter's sister, Debra begins investigating the mysterious killings with Dexter's help, but who lets her take the credit. She then finds a stolen refrigerated truck which contains a gruesome message. Dexter also begins stalking his next victim, a wealthy businessman who gets acquitted of a drunk driving charge. Elsewhere, Sgt. Doakes investigates the murder of an undercover vice cop whom was investigating a powerful drug cartel leader, named Carlos Guerrero, while Lt. Laguerta also learns that Doakes was secretly involved with the murder victim's wife. Also, an unsure Rita tries to try out intimacy with Dexter after they have a get together with Debra and her blind date.


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Season 1, Episode 3: Popping Cherry
Original Air Date—15 October 2006
After the dead body of another of victim of the so-called "Ice Truck Killer" is found on the ice rink at Miami's Hockey Dome, Dexter helps out Debra, newly transfered to the homicide squad to investigate when Lt. Laguerta, ambitious for a promotion and the media spotlight, decides to have the department pursue a security guard whom they believe is the Ice Truck Killer. Meanwhile, Rita receives an unpleasant visit from her imprisoned ex-husband's drug dealer who confiscates her car, leading Dexter to drive her to and from her hotel receptionist job, while at the same time, Dexter zeros in on his next victim, a recently paroled teenage murderer who harbors some dark secrets of his own. Dexter also flashes back to committing his first killing: a nurse who he suspected was poisoning his terminally sick stepfather. Elsewhere, Sgt. Doakes continues to hound the drug kingpin Carlos Guerrero, but gets in over his head when a group of dirty cops decide to take matters involving Guerrero into their own hands.


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Season 1, Episode 4: Let's Give the Boy a Hand
Original Air Date—22 October 2006
The mysterious Ice Truck Killer escalates his killing spree by leaving body parts of his latest victim at sites that relate to memories from Dexter's childhood, leading Dexter him to confront his dark personal history.


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Season 1, Episode 5: Love American Style
Original Air Date—29 October 2006
Debra and the rest of the squad start to make headway when one of the Ice Truck Killer victims is found alive. Meanwhile, Dexter gets in over-his-head trouble when he begins stalking a murderous human-trafficker.


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Season 1, Episode 6: Return to Sender
Original Air Date—5 November 2006
The Ice Truck Killer leaves a surprise dead body for Dexter at one of the crime scenes of Dexter's most recent kill which puts him in the cross hairs of his own Homiside Division of the Miami Metro Police.


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Season 1, Episode 7: Circle of Friends
Original Air Date—12 November 2006
The Ice Truck Killer is supposedly identified, but Dexter is skeptical. Meanwhile, Rita must deal with the return of her menacing, recently paroled ex-husband.


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Season 1, Episode 8: Shrink Wrap
Original Air Date—19 November 2006
The suicide of a wealthy and powerful businesswoman leads Dexter to suspect that her psychologist may have killed her. But Dexter gets a surprise of his own when he pays a visit to the suspect, Dr. Emmett Meridian, which he forces Dexter to open up dark secrets from his past. Elsewhere, as Rita becomes more warmer to her ex-husband Paul, who claims to be a changed man, she wants to move onto intimacy with Dexter, who is afraid of consummating their romance. Meanwhile, Lt. Laguerta visits to Neil Perry makes her become more skeptical to his claims as the Ice Truck Killer. Also, Debra's romance with prosthetic specialist, Rudy, begins to heat up.


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Season 1, Episode 9: Father Knows Best
Original Air Date—26 November 2006
Dexter learns that his biological father (named Joe Driscoll), whom he was told had died 30 years ago, has just recently died and left him everything he owned, including his house. He goes on a trip to pack the items in the house, along with Rita. But later, Debra and Rudy also show up at the house to help out, where Dexter clicks with Rudy, while suspecting something strange about Joe Driscoll's death, and about who Dexter's biological mother was. Flashbacks to Dexter's childhood show him questioning Harry about who his real parents were, and about an accident which an anonymous person donated some of his blood to help the young Dexter during his surgery and it happened to be Mr. Driscoll. Back in Miami, Angel questions a shooting incident involving Doakes and a suspect. Also, Paul begins to slide back into his old habits when he suspects Rita is keeping him away from unsupervised visits to their children.


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Season 1, Episode 10: Seeing Red
Original Air Date—3 December 2006
When the Ice Truck Killer leaves a horribly bloody crime scene at a hotel, Dexter digs deeper into his past.


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Season 1, Episode 11: Truth Be Told
Original Air Date—10 December 2006
Dexter investigates when the Ice Truck Killer strikes again, killing the prosthetic arm prostitute and leaving her body before a Christmas tree in Miami's Santa's Cottage. Sgt. Doakes continues to grow more suspicious about Dexter after catching him in a series of lies about his connection to the Ice Truck Killer. Dexter finally finds a connection between him and the Ice Truck Killer over a past case involving Harry Morgan and a bloodbath crime scene back in 1973 involving Dexter's biological mother. Meanwhile, Lt. Maria Laguerta braces herself for dramatic changes in the department when the officious Captain Matthews maliciously makes her the scapegoat for the department's failure in the case to find the Ice Truck Killer, and he has her replaced. Rudy and Debra spend some quality time together in which he proposes marriage to the smitten detective. With Angel in the hospital recovering from the stabbing, his estranged wife pays a visit, while Rita decides to take her children, Astor and Cody, to visit Paul who's now back in prison.


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Season 1, Episode 12: Born Free
Original Air Date—17 December 2006
Dexter races against the clock to find Debra when she is abducted by Rudy, the Ice Truck Killer, which leads the two psychopathic killers to have a fateful showdown, and who finally reveals his connection to Dexter.