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 69
Movies 40
TV Shows 29
self 10
Voice 2
CSI: Vegas (2021)
All Rise (2019)
This Changes Everything (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)
Columbus Day (2008)
Mr. Brooks (2007)
In Good Company (2004)
The Tony Danza Show (2004)
The Ellen DeGeneres Show (2003)
CSI: Crime Scene Investigation (2000)
Erin Brockovich (2000)
Perfect Murder, Perfect Town: JonBenét and the City of Boulder (2000)
Perfect Murder, Perfect Town: JonBenét and the City of Boulder (2000)
The Early Show (1999)
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)
The View (1997)
The Last Time I Committed Suicide (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)
Intimate Portrait (1993)
Partners (1993)
Frasier (1993)
Late Night with Conan O'Brien (1993)
Fallen Angels (1993)
When Love Kills: The Seduction of John Hearn (1993)
Distant Cousins (1993)
The Tommyknockers (1993)
Through the Eyes of a Killer (1992)
In Sickness and in Health (1992)
Crooked Hearts (1991)
Death Dreams (1991)
Blind Vengeance (1990)
Always (1989)
After Midnight (1989)
Tales from the Crypt (1989)
LIVE with Kelly and Mark (1988)
China Beach (1988)
thirtysomething (1987)
Karen's Song (1987)
Shell Game (1987)
Matlock (1986)
Spenser: For Hire (1985)
This Week with David Brinkley (1981)
The Price Is Right (1972)
Tony Awards (1956)
Ratings
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Information
Known ForActing
GenderFemale
Birthday1958-11-16 (65 years old)
Birth PlaceFremont, United States of America
RelationshipsAlan Rosenberg (1989-01-01 - 2010-01-01)
CitizenshipsUnited States of America
Awardsstar on Hollywood Walk of Fame, Primetime Emmy Award for Outstanding Supporting Actress in a Drama Series
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