Dexter: Original Sin has been a huge hit since its launch back in December 2024. The prequel series explores Dexter Morgan's origin story as he begins his forensic internship at Miami Metro Homicide. The series also explores the 1970s timeline, and shows Dexter and his brother, Brian Moser, before and after their mother's brutal death. The future Ice Truck Killer also turns up in the 90s timeline, which could hint at a possible future spin-off for him.