Prime Video is dropping the curtain on its newest high-stakes thriller, Countdown, with Jensen Ackles stepping into the lead as an LAPD detective drafted into an off-the-books Homeland Security task force. The action drama hails from One Chicago and FBI co-creator Derek Haas and will bow with a three-episode premiere on Wednesday, June 25, 2025.
Ackles plays Mark Meachum, a former Marine turned detective who’s pulled into the orbit of a secret federal unit after the murder of a Homeland Security officer. The mission? Unravel a covert plot that could threaten millions—and do it fast. Think encrypted threats, dirty intel, and high-velocity takedowns, all running on a ticking clock.
The rest of the squad brings its own firepower: Eric Dane, Jessica Camacho, Violett Beane, Elliot Knight, and Uli Latukefu round out the core cast.
Countdown is produced by Amazon MGM Studios and will roll out weekly through its season finale on September 3. The series will be available in over 240 countries and territories via Prime Video.
The newly released trailer teases a show that leans hard into the adrenaline—burning through surveillance ops, shootouts, and mounting tension as Meachum’s team gets closer to a conspiracy that could blow wide open.
For Ackles, coming off a run on The Boys and a decade-plus as a genre mainstay, this marks his return to network-adjacent ensemble drama—this time, with bullets flying and trust in short supply.
