In a surprising twist, Countdown's Mark Meachum, played by Jensen Ackles, survives a life-threatening tumor, setting the stage for the show's future.

Slowly but surely, Countdown 's Mark Meachum ( Jensen Ackles) and Amber Oliveras (Jessica Camacho) are getting closer.

CBS's hit series Tracker released a behind-the-scenes video from the start of Season 3 production that included Jensen Ackles' Russell Shaw.

The Muzzle Pile, the tenth in “Countdown’s” first season, is unusual in that it wraps up a major story line, with three ...