Countdown showcases the murder mystery of an officer with the Department of Homeland Security. As such, LAPD detective Mark Meachum investigates the case with undercover agents. With the series ...

Monday night on The Tonight Show Starring Jimmy Fallon, Jensen Ackles made his Tonight Show debut to promote his new action-packed series, Countdown. During his appearance, he assured everybody that ...

Following the cliffhanging finale in Countdown Season 1, fans wait with bated breath regarding the fate of LAPD Officer Mark Meachum (Jensen Ackles) and DEA Agent Amber Oliveras (Jessica Camacho). The ...

Here's a look at Ackles's one-on-one with Fallon from Monday night's show, with the sneak peek at Countdown kicking in at around the 7:40 mark in the video below: Here's a look at the preview that was ...