Editor's Note: The following contains spoilers for Season 1, Episode 10 of CountdownFor most of Countdown’s first season, it’s been established that Jensen Ackles' Mark Meachum is going to die.

Supernatural alum Jensen Ackles has been tapped to headline Prime Video’s Countdown, an upcoming 13-episode thriller drama series from showrunner Derek Haas (One Chicago). Deadline reported that Prime ...

Here's a look at Prime Video's June 2025 trailer, with the look at Countdown kicking in at around the 4:40 mark: Ackles on Working with the "Countdown" Cast: "It's like every ingredient for a perfect ...