Marg Helgenberger

Marg Helgenberger steps back into the shoes of Catherine Willows on CSI: Vegas, and only ET was on location in Las Vegas, Nevada, while they filmed Thursday's season 2 premiere to welcome the veteran actress back to the CSI franchise -- and…

Marg Helgenberger is feeling the love as she reprises her role as Catherine Willows in season 2 of CSI: Vegas. The veteran actress steps back into her iconic character's shoes, reintegrating herself back onto the CSI team following the…