He's saved the world from impending doom for seven seasons on Fox's hit show "24," and now Jack Bauer himself, Kiefer Sutherland, is opening up to ET about what exciting surprises fans can expect from the upcoming season.

"One of the things that's exciting about season eight for us, which is different from all the other seasons is it's directly connected to the end of season seven," he says. " "Normally there's a year or two break between seasons, between story lines -- and this year that is not the case."

Sutherland also tells ET that the upcoming season will take place in New York, which will definitely have an impact on the storyline and the characters.

"There's a real tangible energy you can't deny that about New York City," the actor explains. "The situations have always made Jack Bauer speak really quickly, and now he runs really quickly because in New York you've got to do that."

Freddie Prinze Jr. joins the "24" cast for season eight as Davis Cole, a Marine who runs the Counter Terrorist Unit (CTU) Field Ops. division. The 33-year-old star tells ET about being at Comic-Con with his cast mates, and about his new role on the show.

"It's trial by fire, but it's good so far," he says. "It's been a lot of fun. I'm scared to say it's the best job I've ever had, but right now, it feels like the best job I've ever had."

ET also spoke with "24" cast members Mary Lynn Rajskub. and Anil Kapoor -- watch the video for more season eight secrets!