About
Marg Helgenberger is an American actress with a career spanning several decades. She first gained recognition for her role as Siobhan Ryan on the soap opera "Ryan's Hope" in the 1980s. She achieved widespread fame for her portrayal of Catherine Willows on the hit CBS crime drama "CSI: Crime Scene Investigation," a role she reprised in later iterations of the series. Helgenberger has also starred in other notable TV series and films, securing her place as a prominent figure in television.
Career Timeline
Soap Opera Debut
Gained early experience on "Ryan's Hope," a daytime soap opera.
"China Beach" Breakthrough
Starred in "China Beach," earning an Emmy Award.
"CSI" Phenomenal Success
Cast as Catherine Willows in "CSI: Crime Scene Investigation," becoming a household name.
Peak CSI Popularity
With CSI at its peak, Helgenberger becomes one of the highest-paid TV actresses.
Post-CSI TV Roles
Continued TV roles in series like "Under the Dome" and "Intelligence".
CSI Revival Appearance
Reprised her role as Catherine Willows in the CSI revival series.
Steady Television Career
Continues to act in television, maintaining a respected career.
Related Celebrities
Last updated: February 21, 2026