Eric Dane and Jensen Ackles discuss their highly anticipated action series 'Countdown' in new Yardbarker interview

On the task force, every character has their own unique strength. So what strength did the role of Mark unlock in the actor? "I would say his vulnerability. I think he was pretty walled up, like there was a lot of layers to cut through with this character to get to any kind of sense of emotional vulnerability. That was sometimes tough to play that, but it's almost like, when you have an emotional scene, and it's like the best way to cry is to try not to cry," Ackles explained. "And so, I was kind of doing that with him, was trying not to be emotional, trying not to let my emotions seep out, but I felt like there was kind of a beauty in allowing that facade to crack."

The series has an impressive ensemble, which gives fans plenty of different dynamics and relationships to become invested in. "We had a very solid chemistry, this cast off screen and on screen, which is rare," Dane shared. "People will show up for the writing, but they stay for the chemistry between the characters, and if you want to have somebody come back and want to watch the show, you have to create characters they can identify with and invest in."