Marg Helgenberger
Personal Info
Known for
Acting
Gender
Female
Birthday
1958-11-16 (66 years old)
Place of Birth
Fremont, Nebraska, USA
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 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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Acting
(2019)
A Dog's Journey
as Hannah Montgomery
(2019)
This Changes Everything
as Self
(2017)
Almost Friends
as Samantha
(2015)
CSI: Immortality
as Catherine Willows
(2009)
Wonder Woman
as Hera (voice)
(2008)
Columbus Day
as Alice
(2007)
Mr. Brooks
as Emma Brooks
(2004)
In Good Company
as Ann
(2000)
Erin Brockovich
as Donna Jensen
(2000)
(1999)
Lethal Vows
as Ellen Farris
(1999)
Happy Face Murders
as Jen Powell
(1998)
Species II
as Dr. Laura Baker
(1998)
Thanks of a Grateful Nation
as Jerrilynn Folz
(1998)
Giving Up the Ghost
as Anna Hobson
(1997)
Fire Down Below
as Sarah Kellogg
(1997)
(1997)
Gold Coast
as Karen DiCilia
(1997)
Murder Live!
as Pia Postman
(1996)
My Fellow Americans
as Joanna (uncredited)
(1996)
Conundrum
as Det. Rose Ekberg
(1995)
Bad Boys
as Alison Sinclair
(1995)
Species
as Dr. Laura Baker
(1995)
Inflammable
as Lt. (j.g.) Kay Dolan
(1995)
Just Looking
as Darlene Carpenter
(1994)
The Cowboy Way
as Margarette
(1994)
Keys
as Maureen 'Kick' Kickasola
(1994)
Lie Down with Lions
as Kate Nessen
(1994)
Where Are My Children?
as Vanessa Meyer Vernon Scott
(1994)
(1993)
Distant Cousins
as Connie
(1993)
Partners
as Georgeanne Bidwell
(1993)
When Love Kills: The Seduction of John Hearn
as Debbie Banister
(1992)
In Sickness and in Health
as Mickey
(1992)
Through the Eyes of a Killer
as Laurie Fisher
(1991)
Crooked Hearts
as Jennetta
(1991)
Death Dreams
as Crista Westfield
(1990)
Blind Vengeance
as Virginia Whitelaw
(1989)
Always
as Rachel
(1989)
After Midnight
as Alex (segment "All Night Operator")
(1988)
China Beach: Pilot
as K.C. Kolowski