Marg Helgenberger

Marg Helgenberger

Acting
Born Nov 16, 1958
From Fremont, Nebraska, USA

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

Filmography — Acting

Bad Boys
6.8
1995

Bad Boys

Alison Sinclair

Species
6.0
1995

Species

Dr. Laura Baker

Almost Friends
6.3
2017

Almost Friends

Samantha

Erin Brockovich
7.4
2000

Erin Brockovich

Donna Jensen

Species II
5.2
1998

Species II

Dr. Laura Baker

A Dog's Journey
8.1
2019

A Dog's Journey

Hannah Montgomery

Always
6.2
1989

Always

Rachel

Mr. Brooks
6.9
2007

Mr. Brooks

Emma Brooks

Wonder Woman
7.2
2009

Wonder Woman

Hera (voice)

Fire Down Below
5.8
1997

Fire Down Below

Sarah Kellogg

In Good Company
6.1
2004

In Good Company

Ann

When Love Kills: The Seduction of John Hearn
1.0
1993

When Love Kills: The Seduction of John Hearn

Debbie Banister

My Fellow Americans
6.0
1996

My Fellow Americans

Joanna (uncredited)

The Last Time I Committed Suicide
5.1
1997

The Last Time I Committed Suicide

Lizzy

The Cowboy Way
5.7
1994

The Cowboy Way

Margarette

Columbus Day
5.0
2008

Columbus Day

Alice

This Changes Everything
6.2
2019

This Changes Everything

Self

CSI: Immortality
7.2
2015

CSI: Immortality

Catherine Willows

Conundrum
5.3
1996

Conundrum

Det. Rose Ekberg

Lethal Vows
5.7
1999

Lethal Vows

Ellen Farris

After Midnight
5.7
1989

After Midnight

Alex (segment "All Night Operator")

Thanks of a Grateful Nation
4.0
1998

Thanks of a Grateful Nation

Jerrilynn Folz

In Sickness and in Health
1.0
1992

In Sickness and in Health

Mickey

Giving Up the Ghost
6.0
1998

Giving Up the Ghost

Anna Hobson

Crooked Hearts
5.5
1991

Crooked Hearts

Jennetta

Perfect Murder, Perfect Town: JonBenét and the City of Boulder
5.6
2000

Perfect Murder, Perfect Town: JonBenét and the City of Boulder

Patsy Ramsey

Death Dreams
5.9
1991

Death Dreams

Crista Westfield

Lie Down with Lions
3.7
1994

Lie Down with Lions

Kate Nessen

Just Looking
3.2
1995

Just Looking

Darlene Carpenter

Distant Cousins
5.5
1993

Distant Cousins

Connie

Murder Live!
5.5
1997

Murder Live!

Pia Postman

Gold Coast
5.1
1997

Gold Coast

Karen DiCilia

Through the Eyes of a Killer
5.4
1992

Through the Eyes of a Killer

Laurie Fisher

Keys
3.7
1994

Keys

Maureen 'Kick' Kickasola

Where Are My Children?
5.9
1994

Where Are My Children?

Vanessa Meyer Vernon Scott

China Beach: Pilot
1988

China Beach: Pilot

K.C. Kolowski

Inflammable
5.0
1995

Inflammable

Lt. (j.g.) Kay Dolan

4.4
1993

Partners

Georgeanne Bidwell

Blind Vengeance
1.0
1990

Blind Vengeance

Virginia Whitelaw

Happy Face Murders
4.2
1999

Happy Face Murders

Jen Powell

Peacemaker
10.0
1989

Peacemaker

Mrs. Cooper