Marg Helgenberger
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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). Description above from the Wikipedia article Marg Helgenberger, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Known for
Credits
Erin Brockovich (2000)
as Donna Jensen
A Dog's Journey (2019)
as Hannah Montgomery
Bad Boys (1995)
as Alison Sinclair
Species (1995)
as Dr. Laura Baker
Mr. Brooks (2007)
as Emma Brooks
Gold Coast (1997)
as Karen DiCilia
Fire Down Below (1997)
as Sarah Kellogg
Species II (1998)
as Dr. Laura Baker
The Cowboy Way (1994)
as Margarette
Always (1989)
as Rachel
Partners (1993)
as Georgeanne Bidwell
Inflammable (1995)
as Lt. (j.g.) Kay Dolan
Wonder Woman (2009)
as Hera (voice)
China Beach: Pilot (1988)
as K.C. Kolowski
In Good Company (2004)
as Ann
Just Looking (1995)
as Darlene Carpenter
Keys (1994)
as Maureen 'Kick' Kickasola
The Last Time I Committed Suicide (1997)
as Lizzy
This Changes Everything (2019)
as Self
Almost Friends (2017)
as Samantha
My Fellow Americans (1996)
as Joanna (uncredited)
Columbus Day (2008)
as Alice
Lie Down with Lions (1994)
as Kate Nessen
After Midnight (1989)
as Alex (segment "All Night Operator")
Peacemaker (1989)
as Mrs. Cooper
CSI: Immortality (2015)
as Catherine Willows
Thanks of a Grateful Nation (1998)
as Jerrilynn Folz
Lethal Vows (1999)
as Ellen Farris
Crooked Hearts (1991)
as Jennetta
Conundrum (1996)
as Det. Rose Ekberg
Through the Eyes of a Killer (1992)
as Laurie Fisher
Happy Face Murders (1999)
as Jen Powell
In Sickness and in Health (1992)
as Mickey
Perfect Murder, Perfect Town: JonBenét and the City of Boulder (2000)
as Patsy Ramsey
Giving Up the Ghost (1998)
as Anna Hobson
Death Dreams (1991)
as Crista Westfield
Where Are My Children? (1994)
as Vanessa Meyer Vernon Scott
When Love Kills: The Seduction of John Hearn (1993)
as Debbie Banister
Murder Live! (1997)
as Pia Postman
Blind Vengeance (1990)
as Virginia Whitelaw
Distant Cousins (1993)
as Connie