TV series
They're catching killers. He's about to become one.
In 1991 Miami, Dexter Morgan transitions from student to avenging serial killer. When his bloodthirsty urges can't be ignored any longer, Dexter must learn to channel his inner darkness. With the guidance of his father, Harry, he adopts a Code designed to help him find and kill people who deserve to be eliminated from society without getting on law enforcements' radar. This is a particular challenge for young Dexter as he begins a forensics internship at the Miami Metro Police Department.
Streaming, rental and purchase options
Checked Jul 22, 2026
Dexter: Original Sin is available to stream on DirecTV On Demand, Paramount+ (Via Amazon Prime), Spectrum On Demand, Fubo, Paramount+, Paramount+ (Via Apple TV), Prime Video, and The Roku Channel in United States. You can also buy it from Amazon, Apple TV, and Fandango at Home. Use the direct links below to open the provider.
In 1991 Miami, Dexter Morgan transitions from student to avenging serial killer. When his bloodthirsty urges can't be ignored any longer, Dexter must learn to channel his inner darkness. With the guidance of his father, Harry, he adopts a Code designed to help him find and kill people who deserve to be eliminated from society without getting on law enforcements' radar. This is a particular challenge for young Dexter as he begins a forensics internship at the Miami Metro Police Department.
Choose an episode, then use the watch options above for the show.
Episode 1
Young Dexter Morgan struggles to keep his urges in check while navigating life with his father, Harry, and sister, high-school senior Deb. After Harry has a health scare, Dexter realizes it may finally be time to fulfill his destiny.
Where to watch Dexter: Original Sin
Episode 2
Dexter adjusts to his new job as a forensics intern at Miami Metro, as Harry returns to work after his medical leave. Deb lashes out at her dad by engaging in petty criminal behavior.
Where to watch Dexter: Original Sin
Episode 3
Dexter goes after a loan shark with ties to Batista, as Harry is told to keep an eye on Maria Laguerta, Miami Metro's newest homicide detective. Deb throws a party to win the favor of her volleyball teammates.
Where to watch Dexter: Original Sin
Episode 4
Dexter targets a retired mob hitman (who may still be killing), as Harry works the gruesome murder case of a 10-year-old boy. Deb sneaks into a nightclub with Sofia and meets an exciting new friend.
Where to watch Dexter: Original Sin
Episode 5
After a kill goes wrong, Dexter is grounded by Harry. Deb deepens her relationship with Gio, and bonds with her brother on the anniversary of their mother's death.
Where to watch Dexter: Original Sin
Episode 6
Miami Metro is shaken by a kidnapping that hits close to home, as Dexter sets his sights on a killer that slipped through the cracks of the justice system. But first, Dexter must survive a double date with Deb and her new boyfriend.
Where to watch Dexter: Original Sin
Episode 7
Dexter needs to find a new hiding place after his most recent dumping ground is blown. Harry and LaGuerta pitch a controversial theory to Spencer, as the hunt for a missing child continues. Deb gets in trouble for an outburst in volleyball practice.
Where to watch Dexter: Original Sin
Episode 8
Deb sneaks away for a trip with her mysterious boyfriend. Dexter is tasked with finding her. Harry and LaGuerta travel to Tampa to look into a potential serial killer on the loose, while Miami Metro closes in on suspects in the child kidnapping.
Where to watch Dexter: Original Sin
Episode 9
In the fallout of a SWAT raid gone wrong, Dexter closes in on the child kidnapper. Meanwhile, Deb goes to work with her Dad... and sees Miami Metro in a new light. Harry digs deeper into the serial killer case but keeps his theory from LaGuerta.
Where to watch Dexter: Original Sin
Episode 10
Dexter races to find the missing kidnapped child before it's too late. Deb visits her godfather in the hospital and rethinks her future. Harry comes face-to-face with a serial killer... leading to a shocking result.
Where to watch Dexter: Original SinEpisode information updated Jul 22, 2026
Patrick GibsonDexter Morgan
Christian SlaterHarry Morgan
Molly BrownDebra Morgan
James MartinezAngel Batista
Christina MilianMaria LaGuerta
Alex ShimizuVince Masuka
Reno WilsonBobby Watt
Patrick DempseyAaron Spencer
Paramount+ with ShowtimeUnited States
