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Dexter Dexter's world is rocked when a rival serial murderer, dubbed the Ice Truck Killer by the media, privately contacts him and reveals that he knows Dexter's grisly secret. Meanwhile, Dexter's sister, Debra, is transferred to Homicide.
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Crocodile The Miami Metro Police Department investigate the murder of an undercover officer, while Dexter stalks another victim. Debra discovers a piece of evidence in the Ice Truck Killer Case that helps her get a promotion.
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Popping Cherry While LaGuerta focuses the department's attention on a potential suspect in the Ice Truck Killer Case, Debra continues to look elsewhere. Doakes pays a visit to drug lord, Carlos Guerrero. Flashbacks show Dexter killing his first human.
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Let's Give the Boy a Hand The Ice Truck Killer's recent crime scenes send a secret message to Dexter Morgan, and lead him to remember his past.
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Love American Style The Homicide Division is buzzing after The Ice Truck Killer's latest victim is found mutilated, while Dexter stalks a murderous human trafficker.
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Return to Sender The Ice Truck Killer leaves a clue at the scene where Dexter has dispatched his latest victim, and Dexter is worried that someone might have witnessed his killing. Rita is trying to deal with her ex-husband.
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Circle of Friends Rita must deal with the return of her menacing, recently paroled husband, Paul Bennett. The Ice Truck Killer is supposedly identified, but Dexter is skeptical.
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Shrink Wrap The strange suicide of a powerful woman leads Dexter to suspect her shrink of murder, but he gets a shock when a visit to the suspect opens up dark secrets from Dexter's past.
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Father Knows Best While on a weekend getaway with Rita, his sister and her new beau, Dexter learns that his biological father, thought to be dead for 30 years, has just passed away, and that he's willed his son everything he owned.
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Seeing Red Dexter Morgan is sent to investigate a blood-soaked crime scene, and is gripped by a suppressed memory. Meanwhile, Rita is charged with assaulting Paul and could lose the children in a custody battle. Angel investigates a hunch regarding The Ice Truck Killer.
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Truth Be Told The Ice Truck Killer sets a trap for Dexter by kidnapping someone close to him; Dexter's increasingly odd behavior piques Doakes's interest.
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Born Free Dexter figures out who the Ice Truck Killer is, along with a dark secret from his troubled past. Meanwhile, La Guerta is replaced with a new boss and Angel figures out a way how to track the killer while he's still in hospital.