Take a trip down memory lane with some of Catherine's greatest moments from her 12 seasons on 'CSI:'.  Don't miss a moment of Catherine's final 'CSI:' episodes starting Wednesday January 18.  Only on CBS!

In our latest 'You Ask, They Tell' Marg Helgenberger answers your questions about being a role model, her thoughts on her character's final season, and even shares never before seen footage from season 1. Catch CSI: Wednesdays at 10/9c only on CBS!

We asked Ted Danson your questions about preparing for his new role on 'CSI:', how he got involved with Ocean preservation and how he can use his scientific upbringing in his new role. Catch Ted on 'CSI:' Wednesdays at 10/9c only on CBS!

Justin Bieber talks about his explosive return to CSI: and the response he got from the last time he was on. Check out CSI: Wednesdays at 10/9c only on CBS!

What happens when Grissom's mom comes to visit and Sara meets one of Grissom's ex-lovers? You'll have to watch to find out! Catch all-new CSI: Wednesdays on CBS!

Take a look behind the scenes of Justin Bieber's time on CSI: and catch new episodes Wednesdays at 10/9c on CBS!

After a season of chasing Dr. Jekyll, Langston ends up stabbed, fighting for his life. Find out what happens Wednesdays at 10/9c on CBS!

Dr. Jekyll is stumping the Las Vegas CSI team - is he a killer or is simply trying to help? Watch CSI: to find out! Wednesdays on CBS!