Dexter: Original Sin, a prequel to the original Dexter series, will premiere on Paramount+ on December 13 and on Showtime on December 15. The series, set in 1991 Miami, stars Patrick Gibson as a young Dexter Morgan and features Michael C. Hall as the voice of Dexter's inner monologue. Despite the return of Hall, fans have expressed skepticism about the casting and the necessity of the prequel. The show follows Dexter's transformation from a student to a serial killer under the guidance of his father, Harry, played by Christian Slater. The series will consist of 10 episodes and includes a notable cast with actors like Sarah Michelle Gellar and Patrick Dempsey.