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