Showrunner Jason Tracey dishes to ET about the perks of having Catherine Willows back in the 'CSI' universe. Marg Helgenberger steps back into the shoes of Catherine Willows on CSI: Vegas, and ...

Marg Helgenberger, who played assistant supervisor Willows on 12 seasons of CSI: Crime Scene Investigation from 2000 to 2012, is returning to action for the second season of CBS' CSI ...

"Marg Helgenberger ... through the 12th season, mostly because I felt like I was ready to go, as great as the job was," Helgenberger said of her original departure from CSI in 2012.