Dexter - S02E12 - The British Invasion

Lila finds Doakes imprisoned in the cabin, and realizes that Dexter is the Bay Harbor Butcher. She ignores his pleas for help, and kills Doakes by setting the cabin on fire. Doakes is found dead, and because the evidence of the Bay Harbor Butcher killings indicates him as the criminal, the case is closed. Debra and Lundy try to resolve their relationship problems and Dexter reconciles with Rita. When Lila threatens Rita's children, Dexter realizes that he needs to find a solution to Lila's obsession with him. After Lila attempts to kill him, Dexter follows her to Paris and kills her.

Dexter - S02E11 - Left Turn Ahead

Dexter contemplates admitting to the Bay Harbor Butcher killings. Doakes escapes from his cell but runs afoul of two drug smugglers. The FBI is displeased with the lack of progress in the Bay Harbor Butcher case and assigns a deputy director to take over Lundy's role in the investigation. Angel is arrested for the sexual assault of Lila, who offers to drop the charges if Dexter will resume their relationship. Debra investigates Lila's past and discovers that she is an illegal immigrant. Meanwhile, using Dexter's satellite navigation system, Lila discovers the cabin in the swamp, where Doakes is being held.

Dexter - S02E10 - There's Something About Harry

After their latest confrontation, Dexter imprisons Doakes in a cabin hidden in the Florida Everglades, but is unsure of what to do next. Doakes reveals information that leads Dexter to a surprising discovery about his foster father's death. The FBI continues the search for Doakes, while LaGuerta tries to prove his innocence. As the investigation comes to a close, Debra realizes that Lundy will leave Miami at the end of the investigation. She confronts him about the future of their relationship. Rita and Dexter reconcile and visit the beach together, while Lila plans to frame Angel for raping her.

Dexter - S02E09 - Resistance Is Futile

Under constant surveillance by federal agents, Dexter is unable to dispose of his latest victim's remains. He apologizes to Rita, admitting that his affair with Lila was a mistake, but she is still hesitant to forgive him, as Lila retaliates by pursuing Angel. After finding Dexter's collection of blood slides, Doakes seeks the advice of an old friend in Haiti to analyze them. The department begins to suspect Doakes' involvement in the Bay Harbor Butcher case, but cannot find him for questions. Debra and Lundy spend the night together and contemplate making their relationship public.

Dexter - S02E08 - Morning Comes

A desperate Lila sets her loft on fire in an effort to sustain her relationship with Dexter, but Dexter realizes that Lila is lying when she claims it was an accident. Jimenez visits Dexter and the suspicious Doakes breaks into Dexter's apartment and finds the hidden collection of blood slides. Lundy re-examines all of the department's old cases when he suspects that the Bay Harbor Butcher has a history in law enforcement. Rita tells Dexter that he is no longer welcome to visit her house or her children.

Dexter - S02E07 - That Night, a Forest Grew

A written manifesto sent by the Bay Harbor Butcher to a local newspaper sends Lundy's special task force into chaos. Doakes almost discovers the truth about Dexter's past, which forces Dexter to devise a plan to get him suspended from the police force. During a romantic dinner with Dexter, Lila learns that Dexter plans to attend one of Cody's school events where he will see Rita, and becomes jealous. Rita stands up to her mother and compels her to move out of the house. Debra breaks up with Gabriel and decides to pursue a relationship with Lundy, not knowing if her feelings are reciprocated.

Dexter - S02E06 - Dex, Lies, and Videotape

After learning that he was filmed while cleaning his boat at the marina, Dexter becomes desperate and tries to delete the videofile, which he eventually manages to do before computer upgrades enable its viewing by his colleagues. A mock killer mimics, and claims to be inspired by, the Bay Harbor Butcher, and unless the police find him, the FBI may take over the case completely. After learning about his mother's secret relationship with his foster father, Dexter questions Harry's motives about his own adoption. At Rita's mother suggestion, Dexter brings Lila to dinner, and when Rita finds out that Lila accompanied Dexter on his road trip, Rita breaks up with him. Dexter and Lila leave together and have sex later.

Dexter - S02E05 - The Dark Defender

Dexter discovers that one of the men who murdered his mother in front of him as a boy is still alive. He dreams that a comic-book hero based on the Bay Harbor Butcher saves his mother, and is encouraged by Lila to seek closure by confronting his mother's killer, Santos Jimenez (Tony Amendola). Doakes and LaGuerta investigate a homicide in a comic-book store, and reminisce about their days as partners. Rita's mother warns Dexter to leave Rita and her children alone. Debra begins to lose faith in her relationship with Gabriel, suspecting that he is taking advantage of her.

Dexter - S02E04 - See-Through

Dexter begins to question Lila's suitability as his sponsor, and Rita encourages him to find a male one. Rita's visiting mother, Gail (JoBeth Williams), becomes sure that Dexter is hiding something from the family. Cody starts having nightmares about the Bay Harbor Butcher. When Vince announces that he has found a way to identify the marina where the Bay Harbor Butcher moors his boat, Dexter attempts to destroy some of the evidence. Debra starts dating Gabriel (Dave Baez), who she met at the gym, and LaGuerta returns to her job as lieutenant.

Dexter - S02E03 - An Inconvenient Lie

Rita threatens to leave Dexter if he does not commit to a program to deal with his drug addiction. He starts attending Narcotics Anonymous meetings, while still trying to evade Doakes' constant surveillance. At the meeting, Dexter meets a mysterious and flirtatious woman named Lila (Jaime Murray), who volunteers to be his sponsor. Later, he hunts down a new victim, Roger Hicks (Don McManus), a used-car salesman who murders beautiful brunettes. Lundy invites Debra to join the new task force investigating the Bay Harbor Butcher, and soon discovers a pattern to the murders.

Dexter - S02E02 - Waiting to Exhale

The Miami Metro Police Department, led by FBI Special Agent Frank Lundy, begins the hunt for the "Bay Harbor Butcher". Both Dexter and the police are hunting for Little Chino, and Dexter is determined to kill him properly given a second chance. Debra and Dexter struggle to overcome memories of the encounter with Brian that led to his death. After Paul's funeral, Rita confronts Dexter about his involvement in Paul's death, and he admits to having an addiction, which Rita infers to be to drugs. LaGuerta and her new boss, Lieutenant Esmee Pascal (Judith Scott) are not getting along very well.

Dexter - S02E01 - It's Alive!

A suspicious Doakes follows Dexter at all times, which makes it impossible for Dexter to kill. Thirty-eight days after his last kill, Dexter gains an opportunity, but finds himself unable to murder gang leader Little Chino (Matthew Willig). An emotionally unstable Debra returns to work in the Homicide Department. She tries to resume a normal lifestyle, but finds herself under scrutiny from the public. Paul tries to convince Rita that he was framed by Dexter, but she refuses to believe him in spite of the evidence presented to her. Scuba divers discover the bodies of at least 30 of Dexter's mutilated victims on the ocean floor.

Dexter - S01E12 - Born Free

Doakes and LaGuerta begin to suspect that Rudy is the Ice Truck Killer, while Dexter finds a suspicious picture of the shipping container where his mother was killed. A call from her ex-husband makes Rita suspicious of Dexter and his behavior. Dexter finds Rudy at Dexter's childhood home and finds that Rudy, the alleged Ice Truck Killer, is in fact Dexter's biological brother, Brian Moser, who grew up in a mental institution. Brian intends to have Dexter kill Debra as a reunion with his true family, but Dexter stops him. As the police close in, Brian escapes and Dexter is left with Debra, appearing to have saved her. The same night, Brian breaks into Dexter's apartment and attempts to stab Debra, but Dexter captures him. After an emotionally charged conversation, Dexter slices his brother's throat and leaves him upside down to drain, staging it as a suicide, while wondering what would happen if everyone knew the truth about him.

Dexter - S01E11 - Truth Be Told

The Ice Truck Killer strikes again, leaving a real nightmare before Christmas at Santa's Cottage. Sergeant Doakes becomes more suspicious about Dexter after uncovering a series of Dexter's lies about his connection to the Ice Truck Killer. Dexter finally finds he is connected to the Ice Truck Killer over a past case involving Harry Morgan and a blood-bath crime scene in 1973 involving Dexter's biological mother. Lieutenant Maria LaGuerta braces herself as Captain Matthews blames her for the department's failure to find the Ice Truck Killer, and he has her replaced. Rudy and Debra spend some quality time together, and Rudy proposes marriage to the smitten detective. Rita decides to take her children, Astor and Cody, to visit Paul, who has been sent back to prison.

Dexter - S01E10 - Seeing Red

Dexter is sent to investigate a horrific blood-soaked crime scene, which he usually enjoys, but he is gripped by a long-suppressed memory of a childhood trauma. Rita is charged with assaulting Paul and could lose her children in a custody battle. However, when Dexter finds out, he decides to remove Paul from his and Rita's lives, but only temporarily. During a briefing at the station, it is suggested that Doakes had read Dexter's mind: Dexter had an internal monologue, which Doakes responded to. Angel investigates a hunch regarding the Ice Truck Killer, which leads him to suspect Rudy.

Dexter - S01E09 - Father Knows Best

Dexter learns that his biological father, Joe Driscoll, who he thought had been long dead, has only recently died and has left all of his belongings to Dexter, including his house. Dexter travels to the house with Rita. Debra and Rudy arrive there later to assist him in cleaning out the house. Dexter gets on well with Rudy, but suspects there is something strange about Joe Driscoll's death, and about the identity of Dexter's biological mother. Rudy is insistent on attending the weekend trip, and one of Joe's neighbors thinks that Rudy looks familiar. Flashbacks to Dexter's childhood show his questioning his foster father Harry (James Remar) about his real parents, and Dexter finds that Mr. Driscoll donated some of his blood to the young Dexter for surgery. Meanwhile, Paul begins to slide back into his old abusive habits when he suspects Rita is preventing him from having unsupervised visits to their children.

Dexter - S01E08 - Shrink Wrap

An unexplained suicide of a wealthy and powerful woman leads Dexter to suspect that her psychiatrist, Dr. Emmett Meridian, may have killed her. But he gets a shock when a visit to the suspect reveals dark secrets from Dexter's past. Elsewhere, Rita becomes warmer towards her ex-husband Paul, who claims to have reformed. She wants to become more intimate with Dexter, who is afraid of physically consummating their relationship. At the same time, Debra is falling in love with her new boyfriend.

Dexter - S01E07 - Circle of Friends

Dexter must deal with Rita's menacing husband. Debra goes on a date with the prosthetics expert who made prosthetic legs for an Ice Truck Killer survivor. Debra and Angel are investigating the Ice Truck Killer and discover a familiar name with speeding violations near the scene of the Ice Truck Killer's third murder. Dexter is investigating Sergeant Doakes's knife victim; he already knows the killer's identity but needs time to locate him. The Ice Truck Killer is finally apprehended, but Dexter doubts that they have caught the correct man.

Dexter - S01E06 - Return to Sender

The body of one of Dexter's previous female victims has been found, despite Dexter's having thrown both of the corpses into the ocean. A young Cuban boy had witnessed the previous night's events, and Dexter dismisses his colleagues' leads that could direct them towards him. Eventually, Dexter frames the husband, whose body is still missing, with his wife's murder. The witness had described Jesus rather than Dexter. During this time, Rita dissuades her abusive husband Paul from attending their daughter's birthday party after he is released early from prison.

Dexter - S01E05 - Love American Style

Dexter finds the Ice Truck Killer's latest victim mutilated but alive and strapped to a table for Dexter to kill. Instead, Dexter reports the crime scene, and his sister finds a partial fingerprint of the Ice Truck Killer. Rita learns that her colleague's fiancé, who was illegally immigrating from Cuba, is missing, and asks Dexter to investigate the problem using his police connections. He investigates Jorge Castillo, a salvage yard owner, and discovers that Castillo is murdering the smuggled immigrants who cannot pay for their freedom. Dexter discovers that Castillo's wife is involved in the murders, and kills both of them. Afterwards, he dumps their bodies in the ocean and frees their Cuban prisoners, not noticing a person watching him from the trunk of a car in the yard.