Marg Helgenberger - Cast

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Overview Cast Crew
Marg Helgenberger

Marg Helgenberger

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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Casted
  • Bad Boys

    Bad Boys

    Played Alison Sinclair

    Average Rating
    6.8
    6713 votes
    Release Date
    Apr 07, 1995
    31 years ago
  • Erin Brockovich

    Erin Brockovich

    Played Donna Jensen

    Average Rating
    7.4
    3477 votes
    Release Date
    Mar 17, 2000
    26 years ago
  • Mr. Brooks

    Mr. Brooks

    Played Emma Brooks

    Average Rating
    6.9
    1803 votes
    Release Date
    May 31, 2007
    19 years ago
  • Species

    Species

    Played Dr. Laura Baker

    Average Rating
    6.0
    1760 votes
    Release Date
    Jul 07, 1995
    31 years ago
  • A Dog's Journey

    A Dog's Journey

    Played Hannah Montgomery

    Average Rating
    8.1
    1584 votes
    Release Date
    May 03, 2019
    7 years ago
  • Species II

    Species II

    Played Dr. Laura Baker

    Average Rating
    5.2
    768 votes
    Release Date
    Apr 10, 1998
    28 years ago
  • In Good Company

    In Good Company

    Played Ann

    Average Rating
    6.0
    657 votes
    Release Date
    Dec 29, 2004
    21 years ago
  • Always

    Always

    Played Rachel

    Average Rating
    6.3
    638 votes
    Release Date
    Dec 22, 1989
    36 years ago
  • Wonder Woman

    Wonder Woman

    Played Hera (voice)

    Average Rating
    7.2
    596 votes
    Release Date
    Mar 03, 2009
    17 years ago
  • Fire Down Below

    Fire Down Below

    Played Sarah Kellogg

    Average Rating
    5.8
    380 votes
    Release Date
    Sep 05, 1997
    29 years ago
  • Almost Friends

    Almost Friends

    Played Samantha

    Average Rating
    6.3
    254 votes
    Release Date
    Nov 17, 2017
    8 years ago
  • My Fellow Americans

    My Fellow Americans

    Played Joanna (uncredited)

    Average Rating
    6.0
    164 votes
    Release Date
    Dec 20, 1996
    29 years ago
  • The Cowboy Way

    The Cowboy Way

    Played Margarette

    Average Rating
    5.6
    161 votes
    Release Date
    Jun 03, 1994
    32 years ago
  • CSI: Immortality

    CSI: Immortality

    Played Catherine Willows

    Average Rating
    7.2
    66 votes
    Release Date
    Sep 27, 2015
    10 years ago
  • After Midnight

    After Midnight

    Played Alex (segment "All Night Operator")

    Average Rating
    5.6
    58 votes
    Release Date
    Nov 03, 1989
    36 years ago
  • The Last Time I Committed Suicide

    The Last Time I Committed Suicide

    Played Lizzy

    Average Rating
    5.0
    41 votes
    Release Date
    Jun 20, 1997
    29 years ago
  • Columbus Day

    Columbus Day

    Played Alice

    Average Rating
    5.0
    41 votes
    Release Date
    Aug 29, 2008
    17 years ago
  • This Changes Everything

    This Changes Everything

    Played Self

    Average Rating
    6.2
    40 votes
    Release Date
    Jun 28, 2019
    6 years ago
  • Lethal Vows

    Lethal Vows

    Played Ellen Farris

    Average Rating
    5.7
    23 votes
    Release Date
    Oct 13, 1999
    26 years ago
  • Crooked Hearts

    Crooked Hearts

    Played Jennetta

    Average Rating
    5.5
    20 votes
    Release Date
    Sep 06, 1991
    35 years ago
  • Through the Eyes of a Killer

    Through the Eyes of a Killer

    Played Laurie Fisher

    Average Rating
    5.4
    14 votes
    Release Date
    Sep 30, 1992
    34 years ago
  • Death Dreams

    Death Dreams

    Played Crista Westfield

    Average Rating
    5.9
    14 votes
    Release Date
    Jun 25, 1991
    35 years ago
  • Perfect Murder, Perfect Town: JonBenét and the City of Boulder

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

    Played Patsy Ramsey

    Average Rating
    5.6
    10 votes
    Release Date
    Feb 27, 2000
    26 years ago
  • Conundrum

    Conundrum

    Played Det. Rose Ekberg

    Average Rating
    5.3
    7 votes
    Release Date
    Mar 03, 1996
    30 years ago
  • Gold Coast

    Gold Coast

    Played Karen DiCilia

    Average Rating
    5.1
    7 votes
    Release Date
    Sep 28, 1997
    28 years ago

  • Partners

    Played Georgeanne Bidwell

    Average Rating
    4.4
    7 votes
    Release Date
    Nov 12, 1993
    32 years ago
  • Lie Down with Lions

    Lie Down with Lions

    Played Kate Nessen

    Average Rating
    3.7
    6 votes
    Release Date
    Jun 12, 1994
    32 years ago
  • Where Are My Children?

    Where Are My Children?

    Played Vanessa Meyer Vernon Scott

    Average Rating
    5.9
    6 votes
    Release Date
    Sep 18, 1994
    32 years ago
  • Happy Face Murders

    Happy Face Murders

    Played Jen Powell

    Average Rating
    4.2
    5 votes
    Release Date
    Sep 05, 1999
    26 years ago
  • Just Looking

    Just Looking

    Played Darlene Carpenter

    Average Rating
    3.2
    5 votes
    Release Date
    Jan 01, 1995
    31 years ago
  • Murder Live!

    Murder Live!

    Played Pia Postman

    Average Rating
    5.5
    4 votes
    Release Date
    Mar 09, 1997
    29 years ago
  • Thanks of a Grateful Nation

    Thanks of a Grateful Nation

    Played Jerrilynn Folz

    Average Rating
    4.0
    3 votes
    Release Date
    May 31, 1998
    28 years ago
  • Keys

    Keys

    Played Maureen 'Kick' Kickasola

    Average Rating
    3.7
    3 votes
    Release Date
    Jan 01, 1994
    32 years ago
  • When Love Kills: The Seduction of John Hearn

    When Love Kills: The Seduction of John Hearn

    Played Debbie Banister

    Average Rating
    1.0
    3 votes
    Release Date
    May 18, 1993
    33 years ago
  • Distant Cousins

    Distant Cousins

    Played Connie

    Average Rating
    5.5
    2 votes
    Release Date
    May 16, 1993
    33 years ago
  • Giving Up the Ghost

    Giving Up the Ghost

    Played Anna Hobson

    Average Rating
    6.0
    2 votes
    Release Date
    Sep 07, 1998
    27 years ago
  • In Sickness and in Health

    In Sickness and in Health

    Played Mickey

    Average Rating
    1.0
    2 votes
    Release Date
    Mar 08, 1992
    34 years ago
  • Peacemaker

    Peacemaker

    Played Mrs. Cooper

    Average Rating
    10.0
    2 votes
    Release Date
    Oct 12, 1989
    37 years ago
  • Blind Vengeance

    Blind Vengeance

    Played Virginia Whitelaw

    Average Rating
    1.0
    1 votes
    Release Date
    Aug 22, 1990
    36 years ago
  • Inflammable

    Inflammable

    Played Lt. (j.g.) Kay Dolan

    Average Rating
    5.0
    1 votes
    Release Date
    Nov 28, 1995
    30 years ago
  • China Beach: Pilot

    China Beach: Pilot

    Played K.C. Kolowski

    Average Rating
    0.0
    0 votes
    Release Date
    Apr 26, 1988
    38 years ago
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