Marg Helgenberger
Biography
Mary Marg Helgenberger (born November 16, 1958) is an American actress. She began her career in the early 1980s and first came to attention for playing the role of Siobhan Ryan on the daytime soap opera Ryan's Hope from 1982 to 1986. She is best known for her role as Catherine Willows in the CBS police procedural drama CSI: Crime Scene Investigation (2000–13) and the subsequent TV movie Immortality (2015). She reprised the role in the sequel CSI: Vegas (2022–present). Helgenberger is also known for playing the role of K.C. Koloski in the ABC drama China Beach (1988–91), which earned her the 1…
Known For
CSI: Crime Scene Investigation
ER
King of the Hill
Frasier
The View
RuPaul's Drag Race
Golden Globe Awards
LIVE with Kelly and Mark
Matlock
The Ellen DeGeneres Show
Late Night with Conan O'Brien
Tony Awards
Tales from the Crypt
Under the Dome
The Larry Sanders Show
People's Choice Awards
Intimate Portrait
All Rise