DEXTER's Trinity Killer Spin-Off Gets Major Update From Franchise Showrunner
It looks like the most terrifying villain in the Dexter franchise still has more blood to spill, at least narratively. The long-teased spin-off series focused on the Trinity Killer just got a noteworthy update from Dexter showrunner Clyde Phillips, and while the project hasn’t gotten the official go-ahead yet, it’s much further along than we expected.During a panel at CCXP Mexico (via Reddit user TheSystolicGem), Phillips revealed: “All ten episodes of the Trinity Killer have been written.” So, the show is ready to roll, but the show hasn’t been greenlit for production just yet.The holdup may have less to do with the show’s content and more to do with strategy. Showtime is already juggling multiple Dexter-related projects, including Dexter: Original Sin, a prequel series diving into young Dexter’s 1990s origins, and Dexter: Resurrection, which will see Michael C. Hall return in some form. Phillips and his team might be waiting to see how Resurrection performs before launching another full-fledged series. That could be why Trinity’s fate is still in limbo.The Trinity Killer, played masterfully by John Lithgow in Season 4, remains the franchise’s most memorable antagonist and arguably its most psychologically layered. Lithgow is expected to return in some form, likely as a narrator or in brief flashbacks. The spin-off would explore the killer’s earlier life and twisted methods long before Dexter ever crossed his path. Given that Arthur Mitchell, Trinity’s real name, was active for decades, there’s room to span multiple timelines, family secrets, and possibly new victims.Dexter Season 4 dropped some major breadcrumbs, including the existence of a secret daughter Trinity fathered outside of his seemingly perfect suburban life. Her origins, and her mother’s identity, were never explored. With Lithgow confirmed to cameo in Resurrection, his presence might help build the momentum needed to push the Trinity project forward. If Resurrection hits the numbers Showtime hopes for, then Trinity’s past has a good chance of slicing into the present lineup.


It looks like the most terrifying villain in the Dexter franchise still has more blood to spill, at least narratively. The long-teased spin-off series focused on the Trinity Killer just got a noteworthy update from Dexter showrunner Clyde Phillips, and while the project hasn’t gotten the official go-ahead yet, it’s much further along than we expected.
During a panel at CCXP Mexico (via Reddit user TheSystolicGem), Phillips revealed: “All ten episodes of the Trinity Killer have been written.” So, the show is ready to roll, but the show hasn’t been greenlit for production just yet.
The holdup may have less to do with the show’s content and more to do with strategy. Showtime is already juggling multiple Dexter-related projects, including Dexter: Original Sin, a prequel series diving into young Dexter’s 1990s origins, and Dexter: Resurrection, which will see Michael C. Hall return in some form.
Phillips and his team might be waiting to see how Resurrection performs before launching another full-fledged series. That could be why Trinity’s fate is still in limbo.
The Trinity Killer, played masterfully by John Lithgow in Season 4, remains the franchise’s most memorable antagonist and arguably its most psychologically layered. Lithgow is expected to return in some form, likely as a narrator or in brief flashbacks.
The spin-off would explore the killer’s earlier life and twisted methods long before Dexter ever crossed his path. Given that Arthur Mitchell, Trinity’s real name, was active for decades, there’s room to span multiple timelines, family secrets, and possibly new victims.
Dexter Season 4 dropped some major breadcrumbs, including the existence of a secret daughter Trinity fathered outside of his seemingly perfect suburban life. Her origins, and her mother’s identity, were never explored.
With Lithgow confirmed to cameo in Resurrection, his presence might help build the momentum needed to push the Trinity project forward. If Resurrection hits the numbers Showtime hopes for, then Trinity’s past has a good chance of slicing into the present lineup.