
Marg Helgenberger
Acting • Born 1958-11-16
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). Description above from the Wikipedia article Marg Helgenberger, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
74 credits
Erin Brockovich
Movie • 2000
Donna Jensen

Species II
Movie • 1998
Dr. Laura Baker

In Good Company
Movie • 2004
Ann

Mr. Brooks
Movie • 2007
Emma Brooks

Bad Boys
Movie • 1995
Alison Sinclair

Species
Movie • 1995
Dr. Laura Baker

My Fellow Americans
Movie • 1996
Joanna (uncredited)

The Last Time I Committed Suicide
Movie • 1997
Lizzy

Columbus Day
Movie • 2008
Alice

Fire Down Below
Movie • 1997
Sarah Kellogg

Wonder Woman
Movie • 2009
Hera (voice)

After Midnight
Movie • 1989
Alex (segment "All Night Operator")

The Cowboy Way
Movie • 1994
Margarette

Thanks of a Grateful Nation
Movie • 1998
Jerrilynn Folz

Happy Face Murders
Movie • 1999
Jen Powell

Crooked Hearts
Movie • 1991
Jennetta

Through the Eyes of a Killer
Movie • 1992
Laurie Fisher

Death Dreams
Movie • 1991
Crista Westfield

Lethal Vows
Movie • 1999
Ellen Farris

Lie Down with Lions
Movie • 1994
Kate Nessen

Perfect Murder, Perfect Town: JonBenét and the City of Boulder
Movie • 2000
Patsy Ramsey

Distant Cousins
Movie • 1993
Connie

Conundrum
Movie • 1996
Det. Rose Ekberg

Gold Coast
Movie • 1997
Karen DiCilia

Blind Vengeance
Movie • 1990
Virginia Whitelaw

Inflammable
Movie • 1995
Lt. (j.g.) Kay Dolan

Where Are My Children?
Movie • 1994
Vanessa Meyer Vernon Scott

CSI: Immortality
Movie • 2015
Catherine Willows

China Beach: Pilot
Movie • 1988
K.C. Kolowski

Giving Up the Ghost
Movie • 1998
Anna Hobson

Almost Friends
Movie • 2017
Samantha

Just Looking
Movie • 1995
Darlene Carpenter

In Sickness and in Health
Movie • 1992
Mickey

Keys
Movie • 1994
Maureen 'Kick' Kickasola

When Love Kills: The Seduction of John Hearn
Movie • 1993
Debbie Banister

Always
Movie • 1989
Rachel

Murder Live!
Movie • 1997
Pia Postman

This Changes Everything
Movie • 2019
Self

A Dog's Journey
Movie • 2019
Hannah Montgomery

Partners
Movie • 1993
Georgeanne Bidwell

Peacemaker
Movie • 1989
Mrs. Cooper

The Ellen DeGeneres Show
TV • 2003
Self

The Tony Danza Show
TV • 2004
Self

Spenser: For Hire
TV • 1985
Nancy Kettering

CSI: Crime Scene Investigation
TV • 2000
Catherine Willows

thirtysomething
TV • 1987

China Beach
TV • 1988
KC Koloski

LIVE with Kelly and Mark
TV • 1988
Self - Guest

King of the Hill
TV • 1997
Mrs. Hanover / Pretty Student (voice)

Tales from the Crypt
TV • 1989
Vicki

This Week
TV • 1981

The View
TV • 1997
Self

Frasier
TV • 1993
Emily

The Early Show
TV • 1999
Self

Late Night with Conan O'Brien
TV • 1993
Self - Guest

ER
TV • 1994
Karen Hines

Shell Game
TV • 1987

Intelligence
TV • 2014
Lillian Strand

Under the Dome
TV • 2013
Christine Price

Intimate Portrait
TV • 1993
Self

The Tommyknockers
TV • 1993
Bobbi Anderson

Fallen Angels
TV • 1993
Eve Cressy

Matlock
TV • 1986
Victoria Rollins / Laura Norwood

CSI: Vegas
TV • 2021
Catherine Willows

Perfect Murder, Perfect Town
TV • 2000
Patsy Ramsey

The Price Is Right
TV • 1972
Self

All Rise
TV • 2019
Lisa Benner

Stars in the House
TV • 2020
Self

RuPaul's Drag Race
TV • 2009
Self - Guest Judge

Golden Globe Awards
TV • 1944
Self - Audience Member

Golden Globe Awards
TV • 1944
Self - Nominee

Golden Globe Awards
TV • 1944
Self - Presenter

People's Choice Awards
TV • 1975
Self - Presenter

The Larry Sanders Show
TV • 1992
Susan Elliot