Why isn’t anyone talking about this Dexter prequel anymore?
Back in 2023, Showtime made it clear they wanted to expand the Dexter franchise into a full-blown “Dexter-verse.” Much like how Taylor Sheridan built the Yellowstone empire with its multiple spinoffs, Showtime envisioned a slate of projects that would stretch far beyond Michael C. Hall’s run as Dexter Morgan.
At the time, three spin-offs were on the table:
- A Harrison sequel series, continuing the story where Dexter: New Blood left off.
- A young Dexter prequel, which later became Dexter: Original Sin.
- And, perhaps the most controversial of them all, a Trinity Killer prequel.
While the first two drew interest, the Trinity project was immediately met with backlash. Fans took to social media in droves, voicing their lack of enthusiasm for a story centered on Arthur Mitchell’s earlier years. Instead, the fandom rallied behind another idea: a prequel dedicated to Dexter’s older brother, Brian Moser.
Fans Wanted Brian Moser, Not Trinity
The demand for a Brian Moser prequel series was loud, passionate, and persistent. Many argued that Brian’s story had endless potential: tracing his childhood trauma, life in foster care, his discovery of Dexter, and ultimately, how his urges manifested without the guiding hand of Harry’s Code.
This demand gained so much momentum that many genuinely believed Showtime would pivot away from Trinity and give Brian his own spotlight. A show from Brian’s perspective seemed like the perfect way to explore the “born in blood” theme through a darker, twisted lens.
And then came a twist only few expected.
Brian Appeared in Dexter: Original Sin
To the surprise of many, Dexter: Original Sin (now sadly canceled) did feature a young Brian Moser. First appearing in Episode 2 as a brief cameo, his presence quickly became more significant as the season unfolded. Viewers saw him woven into Dexter’s origin story, even clashing with Harry while Dexter was committing his first kills.
The finale left fans buzzing: Brian was shown observing the Morgan family at dinner, a haunting reminder of what was to come. Showrunner Clyde Phillips later confirmed in an interview with Dissecting Dexter that Brian was always intended to have a larger role in Season 2 and beyond. In fact, the long-term plan was for Original Sin to gradually align with the events of Dexter Season 1—meaning Brian would’ve been a recurring figure until the end.
This revelation changed everything. It suggested that Showtime never truly planned a Brian-centered spin-off. Instead, his arc was designed to run parallel to Dexter’s throughout the 1990s, within Original Sin itself.
Why Fans Lost Interest in a Brian Moser Spin-Off
So, what happened to all the hype for a Brian Moser series? Surprisingly, fans cooled off.
Not because of Roby Attal’s performance—his casting and portrayal of young Brian was widely praised—but because Original Sin had already fulfilled the fantasy. Brian’s story was so seamlessly incorporated into Dexter’s that a standalone prequel started to feel unnecessary, even redundant.
Seeing the brothers’ parallel paths, two siblings born in blood, one following Harry’s Code and the other embracing chaos, was more powerful when explored together. Brian didn’t need his own series; his presence in Original Sin provided exactly what fans were hoping for.
The Cancellation That Shattered Everything
Unfortunately, those plans were cut short. On August 22, 2025, shortly after the Paramount–Skydance merger, the new leadership pulled the plug on Dexter: Original Sin. The cancellation crushed hopes for not only young Dexter’s continuing story but also Brian’s deeper arc.
Fans have since rallied online, creating petitions to save the series. The largest one has already surpassed 102,000 verified signatures, urging Paramount to reconsider. If revived, Season 2 promised bigger roles for Brian and even more backstory for characters like Doakes.
What Do You Think?
Were you one of the fans who pushed for a Brian Moser prequel before Original Sin? And now that his story has partially been explored within the show, do you think a separate spin-off would even make sense? Sound off in the comments!