Dexter: Original Sin season 1, episode 1 includes a shocking flashback from Harry's perspective that reveals another Morgan family member.

Original Sin season 1, episode 1!Paramount+’s Dexter: Original Sin fills in some major gaps about Dexter Morgan’s early days as a serial killer, which includes clarifying details about the origins of his job with Miami Metro.

Dexter’s storyline in the OG show left him hiding out as a lumberjack after his stepsister, Debra (Jennifer Carpenter), was killed off. But in “New Blood,” it was implied that his life had ended, so they decided to opt for another spinoff instead.

Ultimately, Dexter: Original Sin explores more than just Dexter’s origin story. It delves into Harry’s motivations for creating The Code, his reasons for adopting Dexter, and the guilt that eventually led him to take his own life.

"If people like Easter eggs, this show is going to be an Easter egg hunt," said showrunner Clyde Phillips. By Whatever shock still exists from Dexter’s miraculous survival is quickly replaced by a big hit of nostalgia.

With Christian Slater as dad Harry Morgan, Irish actor Patrick Gibson puts young life into TV's favorite serial killer in "Dexter: Original Sin."

Dexter: Original Sin” is, as the title says, the origin story of blood splatter expert and serial killer Dexter Morgan. Clyde Phillips, the showrunner on the first series, is again directing this 10-part series.