Memory of a Killer reveals Patrick Dempsey battling Alzheimer’s as hitman, but insiders reveal shocking character twist fans won’t see coming

Memory of a Killer reveals its first trailer showcasing Patrick Dempsey as a hitman battling early-onset Alzheimer’s in FOX’s upcoming thriller drama. The gripping teaser dropped just days ago, offering viewers their first glimpse into this high-stakes series. The show premieres Monday, January 26, 2026, at 9/8c on FOX.

Patrick Dempsey Returns to Lead FOX’s Dark Thriller

Patrick Dempsey, best known for his iconic role as Dr. Derek Shepherd on Grey’s Anatomy, headlines this dramatic thriller. The veteran actor takes on the challenging role of Angelo Doyle, a professional hitman managing a precarious double life. Dempsey’s return to television marks a significant shift from his previous work, diving into darker material.

The supporting cast is equally impressive, featuring Michael Imperioli as Dutch, Angelo’s oldest friend and accomplished chef whose restaurant serves as a front for criminal enterprise. Gina Torres joins as Special Agent Linda Grant, whose investigation threatens to unmask Angelo’s carefully constructed secrets.

A Hitman with Alzheimer’s at the Center of This Psychological Battle

The series follows Angelo Doyle at a critical turning point in his dangerous career. Angelo lives a double life as an assassin and family man, but his world turns upside down when he receives a devastating diagnosis: early-onset Alzheimer’s. As his memory deteriorates, Angelo must hide this deadly personal secret while continuing his work as a contract killer.

The premise creates intense dramatic tension as Angelo attempts to maintain his professional edge while losing his cognitive abilities. According to the official description, “Angelo is exceptionally resourceful and talented, the best of the best. But he’s about to be tested like never before — and now every minute counts.” Adding to the urgency, Angelo discovers that his wife’s recent death may not have been accidental, forcing him into a desperate hunt for answers.

Cast Details and Character Breakdown

Character	Actor	Role
Angelo Doyle	Patrick Dempsey	Hitman with Alzheimer’s
Dutch	Michael Imperioli	Chef and Angelo’s friend
Maria	Odeya Rush	Angelo’s daughter
Special Agent Linda Grant	Gina Torres	Investigator
Joe	Richard Harmon	Rising hitman
Detective Dave	Peter Gadiot	Local police detective

Odeya Rush appears as Maria, Angelo’s daughter, while Richard Harmon portrays Joe, a hitman on the rise working under Angelo. Peter Gadiot takes on the role of Dave, a local police detective unaware that a world-class hitman operates right under his nose. The ensemble cast creates multiple layers of conflict and tension throughout the narrative.

Behind-the-Scenes Creative Team Adjustments

The series is produced by Warner Bros. Television and FOX Entertainment, with executive producers including Aaron Zelman and Glenn Kessler, who were recently appointed as co-showrunners. The creative leadership recently changed, with Zelman and Kessler taking over from the project’s original developers.

“This is a propulsive, edge-of-your-seat thriller that combines the intensity of 24 with the complexity of House,” says the official series description about the show’s approach to storytelling.

Additional executive producers include Patrick Dempsey himself, Ed Whitmore, Tracey Malone, Cathy Schulman, and David Schulner. Arthur Sarkissian and Martin Campbell also serve as executive producers, alongside Peter Bouckaert of Eyeworks.

What Can Viewers Expect When Memory of a Killer Premieres?

The trailer showcases Patrick Dempsey in a dramatically different mode than audiences may recognize from mainstream television. Audiences can expect intense action sequences, psychological drama, and moral complexity as Angelo navigates his crumbling mental state while maintaining his lethal profession. The show promises high stakes throughout.

The series explores profound themes about identity, family loyalty, and the price of living a double life. As Angelo investigates his wife’s mysterious death while protecting his pregnant daughter from danger, the plot thickens considerably. Every decision carries weight, and his deteriorating memory becomes both a liability and a source of unexpected consequences throughout the narrative. The January premiere date gives viewers the opportunity to dive into this thriller when it arrives on FOX’s midseason schedule.

Sources

• Deadline – First trailer announcement and cast details
• Variety – Series synopsis and character breakdown
• TV Insider – Premiere date and production credits