Dexter attempts to make a friend and mentor someone in the "business." Widely considered the best season, featuring the terrifying Trinity Killer

The first season of Dexter premiered on October 1, 2006, and set the stage for the series. We meet Dexter Morgan (played by Michael C. Hall), a brilliant and eccentric forensic analyst who works for the Miami-Dade Police Department. Unbeknownst to his colleagues, Dexter is a serial killer who targets other serial killers and murderers, adhering to a strict code of conduct instilled in him by his adoptive father, Harry Morgan (played by James Remar).

Following the devastating aftermath of Season 4, Season 5 deals heavily with grief, guilt, and the search for redemption. While investigating a new target, Dexter stumbles upon Lumen Pierce, a woman who survived a horrific captivity at the hands of a coordinated group of serial abusers.

When Dexter premiered on Showtime in 2006, it revolutionized the television landscape. It forced audiences to root for a protagonist who was, by all classic definitions, a monster. Based on the novel Darkly Dreaming Dexter by Jeff Lindsay, the series follows Dexter Morgan. He is a Miami Metro Police Department blood-spatter analyst by day and a vigilante serial killer by night. Guided by his adoptive father’s "Code of Harry," Dexter only targets murderers who have slipped through the cracks of the justice system.

Follow Dexter Morgan—a Miami Metro Police Department blood-spatter analyst by day and a vigilante serial killer by night. This collection covers the show's most iconic arcs, including the Ice Truck Killer, the Trinity Killer, and the intense fallout of Dexter’s double life.

It boldly burned through what most shows would save for a final season. The psychological cat-and-mouse game between Dexter and Doakes remains a high-water mark for television tension, culminating in the iconic "Surprise, motherf***er!" line.

FBI Special Agent Frank Lundy, a brilliant profiler who arrives to spearhead the manhunt, and Sergeant James Doakes, the only Miami Metro cop who always suspected Dexter's dark side.

The fifth season of Dexter premiered on September 27, 2010, and marked a low point for our beloved protagonist. Dexter's life is turned upside down by the arrival of the exonerated Brian Moser (played by Maxwell Huckabee), who seeks revenge against Dexter for his brother's death. As Dexter becomes increasingly isolated and withdrawn, he also finds himself drawn into a cat-and-mouse game with the enigmatic and ruthless Sara Lund (played by Katy Mixon).

: Dexter discovers that the Ice Truck Killer is actually his biological brother, Brian Moser. Brian wants Dexter to embrace his true nature by killing his adoptive sister, Debra. Dexter chooses his surrogate family over his blood line, killing Brian and framing it as a suicide. Season 2: The Hunter Becomes the Hunted