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The dramatic season finale of CSI pulled out all the stops last spring and left viewers wanting more after a triple homicide, a major defection and a double kidnapping. The Insider's Brooke Anderson recently went to the set of the CBS hit to get a sneak peek of filming and to uncover some secrets about tonight's much-awaited 13th season debut!

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"The first episode is actually really exciting, very action-packed," said Danson, who joined the crime drama last season portraying night shift supervisor D.B. Russell. "There's this great side to my character that comes out in the first episode -- where there's some violence in the man that he probably has kept tapped down in life." 

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Danson -- who is best known for his TV sitcom work on shows like Cheers and Becker -- revealed that one of the biggest challenges during his first season was keeping up with the show's slate of 22 episodes. "I was just proud of myself that I made it through," the 64-year-old actor said. 

Brooke also caught up with CSI star George Eads, whose character Nick Stokes quit as an investigator in the finale after getting fed up with "corruption and half-truths." But Eads hints at the fact that Nick is eventually convinced to rejoin the team. "I think my character is not the kind of guy that would leave the team in peril or that would leave the team when they needed him most." 

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Academy Award nominee Elisabeth Shue is also entering her second season and told Brooke what she found most surprising after joining CSI. "It's such a serious show and it deals with very serious subject matter, but the cast and the crew are all such warm and kind and funny people, that there's a lot of levity and a lot of energy on the set." She also reacts to her character being called "sassy."

Watch the video to also hear star Elisabeth Harnois talk about filming a scene where she's helping extinguish a fire and how her character Morgan Brody evolves in the new season and gets to experience both "emotional and physical" journeys.

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You can catch the season premiere of CSI: Crime Scene Investigation tonight at 10 p.m. on CBS.