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 1990 Emmy Award for Outstanding Supporting Actress in a Drama Series. She is also known for roles in the TV series Under the Dome and Intelligence, and the films Species (1995), Species II (1998), Erin Brockovich (2000), and Mr. Brooks (2007).
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Filmography
all 73
Movies 42
TV Shows 31
self 12
Voice 2
CSI: Vegas (2021)
All Rise (2019)
A Dog's Journey (2019)
Almost Friends (2017)
CSI: Immortality (2015)
Intelligence (2014)
Under the Dome (2013)
Wonder Woman (2009)
RuPaul's Drag Race (2009)
Mr. Brooks (2007)
CSI: Crime Scene Investigation (2000)
Erin Brockovich (2000)
Lethal Vows (1999)
Happy Face Murders (1999)
Giving Up the Ghost (1998)
Thanks of a Grateful Nation (1998)
Species II (1998)
Gold Coast (1997)
Fire Down Below (1997)
Murder Live! (1997)
King of the Hill (1997)
My Fellow Americans (1996)
Conundrum (1996)
Inflammable (1995)
Species (1995)
Bad Boys (1995)
Just Looking (1995)
ER (1994)
Where Are My Children? (1994)
Lie Down with Lions (1994)
The Cowboy Way (1994)
Blind Vengeance (1994)
Keys (1994)
Partners (1993)
Frasier (1993)
Late Night with Conan O'Brien (1993)
Fallen Angels (1993)
When Love Kills: The Seduction of John Hearn (1993)
The Tommyknockers (1993)
Through the Eyes of a Killer (1992)
Crooked Hearts (1991)
Death Dreams (1991)
Blind Vengeance (1990)
Always (1989)
After Midnight (1989)
Peacemaker (1989)
China Beach: Pilot (1988)
China Beach (1988)
Karen's Song (1987)
Shell Game (1987)
Matlock (1986)
Spenser: For Hire (1985)
Tony Awards (1956)
Golden Globe Awards (1944)
Gallery
Information
Known ForActing
GenderFemale
Birthday1958-11-16 (66 years old)
Birth NameMary Marg Helgenberger
Birth PlaceFremont, United States
RelationshipsAlan Rosenberg (1989 - 2010)
CitizenshipsUnited States
Awardsstar on Hollywood Walk of Fame, Primetime Emmy Award for Outstanding Supporting Actress in a Drama Series
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