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Dexter: Original Sin
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Cast of Dexter: Original Sin

TV (2024 - 2025) • 10 actors • Showtime
Dexter: Original Sin cast
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Dexter: Original Sin (TV) Cast
The cast of Dexter: Original Sin. Updated on June 24, 2025.
10 actors
Patrick Gibson
as Dexter Morgan (10 episodes)

Patrick Gibson stars as Dexter Morgan, a character known for his complex and dark nature.

Christian Slater
as Harry Morgan (10 episodes)

Christian Slater plays Harry Morgan, Dexter's father and a guiding influence in his life.

Molly Brown
as Debra Morgan (10 episodes)

Molly Brown portrays Debra Morgan, Dexter's supportive and headstrong sister.

Christina Milian
as Maria LaGuerta (10 episodes)

Christina Milian is Maria LaGuerta, a confident and ambitious officer.

Alex Shimizu
as Vince Masuka (10 episodes)

Alex Shimizu plays Vince Masuka, known for his quirky personality and forensic expertise.

Reno Wilson
as Bobby Watt (10 episodes)
James Martinez
as Angel Batista (10 episodes)

James Martinez takes on the role of Angel Batista, a dedicated and honest detective.

Patrick Dempsey
as Aaron Spencer (10 episodes)
Michael C. Hall
as The Inner Voice of Dexter (voice) (10 episodes)

Michael C. Hall provides the voice for the inner thoughts of Dexter, adding layers to the character's complexity.

Sarah Michelle Gellar
as CSI Chief Tanya Martin (1 episode)
For the best insights and data about the TV show Dexter: Original Sin, visit our main Dexter: Original Sin page.
Dexter: Original Sin
Set in 1991 Miami, 'Dexter: Original Sin' is a prequel to the acclaimed series 'Dexter,' exploring the early years of Dexter Morgan as he evolves from a college student into a vigilante serial killer. Under the mentorship of his father, Harry Morgan, Dexter develops a moral code to target only those who have escaped justice. The series showcases his challenges and the beginnings of his career in forensics at Miami Metro Police Department, narrated by Michael C. Hall, reprising his iconic role through voice.
Dexter: Original Sin Details
1 season
10 episodes
Status: Ended
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