Season 1

Dexter Morgan, a forensics expert who leads a secret life as a killer of unconvicted criminals, is impressed by the work of a new serial killer.

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.

While LaGuerta focuses the department's attention on a potential suspect in the Ice Truck Killer Case, Debra continues to look elsewhere. Doakes decides to pay a visit to drug lord.

The Ice Truck Killer's recent crime scenes send a secret message to Dexter Morgan, and lead him to remember his past.

The Homicide Division is buzzing after The Ice Truck Killer's latest victim is found mutilated, while Dexter stalks a murderous human trafficker.

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.

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.

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.

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.

When Dexter is sent to investigate a bloody crime scene, deeply suppressed memories from his childhood begin to resurface.

The Ice Truck Killer sets a trap for Dexter by kidnapping someone close to him; Dexter's increasingly odd behavior piques Doakes's interest.

Dexter follows the clues left for him by the Ice Truck Killer in hopes of finding his lost sister, Debra.