The actor who brought the infamous Arthur Mitchell to life shared this straightforward tip.
Throughout Dexter and Dexter: New Blood, America's favorite serial killer faced numerous formidable antagonists. However, one villain left an unforgettable mark—Arthur Mitchell, also known as the Trinity Killer. Portrayed by John Lithgow in the critically acclaimed fourth season (2009) and later in a flashback scene in New Blood (2021), Trinity remains the most chilling and memorable villain in the franchise. His presence was a major reason why Season 4 is still regarded as one of the strongest seasons in television history.
Despite more than 15 years passing since his debut as Trinity, Lithgow continues to appreciate his role in Dexter and remains deeply connected to the character. In a recent revelation that thrilled fans, Lithgow confirmed that he has already filmed a scene for Dexter: Resurrection, marking his return to the franchise.
Will the Trinity Killer Prequel Finally Happen?
Paramount+ has been investing heavily in Dexter-related projects, following the success of Yellowstone's prequels (1923 and 1883). The most recent Dexter: Original Sin is just one example, but the network has had another intriguing project on its radar for over two years—a Trinity Killer prequel series.
Back in December 2024, showrunner Clyde Phillips confirmed during a press interview that he and Scott Reynolds had already completed the full script for the Trinity Killer prequel.
Additionally, Lithgow will narrate the prequel, possibly serving as the inner voice of young Arthur Mitchell—mirroring how Hall voices Dexter’s thoughts in Original Sin.
John Lithgow’s Advice to the Next Trinity Killer
During a recent interview with ScreenRant, Lithgow offered a simple yet powerful piece of advice to the actor who will portray the younger Arthur Mitchell in the prequel:
"Just be on his side. Not an easy thing to do with the Trinity Killer, but be on his side."
Lithgow, a seasoned actor, acknowledges the challenge of portraying such a brutal and evil character. However, his advice highlights the importance of understanding and justifying the character’s motivations, no matter how sinister they may be.
What’s Next for the Dexter Universe?
While the Trinity Killer prequel is fully written, its fate remains uncertain. Showtime is currently prioritizing Dexter: Resurrection, which boasts a stellar cast. Meanwhile, a second season renewal for Dexter: Original Sin is still pending. Insiders suggest that if Original Sin secures a second season, the Trinity prequel will finally move forward.
For now, fans can look forward to John Lithgow’s return in Dexter: Resurrection, keeping the legacy of the Trinity Killer alive.