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 ...
Known For
Complete Filmography
This Changes Everything
2019
as Self
An investigative look and analysis of gender disparity in Hollywood, featuring accounts from well-known actors, executives and artists in the Industry...
A Dog's Journey
2019
as Hannah Montgomery
A dog finds the meaning of his own existence through the lives of the humans he meets.
Almost Friends
2017
as Samantha
A man in his mid-20s, still living at home with his mother and stepfather, puts all his eggs in one basket: the girl who works at his local coffee sho...
CSI: Immortality
2015
as Catherine Willows
An explosion inside a casino brings Catherine Willows back to Las Vegas to investigate. And when the crime is tied to Lady Heather, Gil Grissom is bro...
Wonder Woman
2009
as Hera (voice)
On the mystical island of Themyscira, a proud and fierce warrior race of Amazons have raised a daughter of untold beauty, grace and strength: Princess...
Columbus Day
2008
as Alice
A thief tries to fix the damage done during the biggest heist of his career.
Mr. Brooks
2007
as Emma Brooks
A psychological thriller about a man who is sometimes controlled by his murder-and-mayhem-loving alter ego.
In Good Company
2004
as Ann
Dan Foreman is a seasoned advertisement sales executive at a high-ranking publication when a corporate takeover results in him being placed under naiv...
Erin Brockovich
2000
as Donna Jensen
A twice-divorced mother of three who sees an injustice, takes on the bad guy and wins -- with a little help from her push-up bra. Erin goes to work fo...
Perfect Murder, Perfect Town: JonBenét and the City of Boulder
2000
as Patsy Ramsey
About the infamous murder of six year old child beauty pageant contestant JonBenét Ramsey and the hysterical media coverage that made the investigatio...
Lethal Vows
1999
as Ellen Farris
A seemingly upstanding, caring husband and father is accused of foul play by his ex-wife regarding the mysterious death of his second wife.
Happy Face Murders
1999
as Jen Powell
An eccentric older woman implicates her brutal & controlling lover in the murder of a young girl. Absorbed with "Murder She Wrote" and "Matlock", she ...
Giving Up the Ghost
1998
as Anna Hobson
After a woman's husband dies while jogging in the park, the young widow's deep grief helps to awaken his ghost. The ghost urges her to commit suicide ...
Thanks of a Grateful Nation
1998
as Jerrilynn Folz
An examination of the aftermath of Desert Storm and how servicemen and women were affected by it medically.
Species II
1998
as Dr. Laura Baker
Having just returned from a mission to Mars, Commander Ross isn't exactly himself. He's slowly becoming a terrifying alien entity with one goal -- to ...
Gold Coast
1997
as Karen DiCilia
Karen stands to inherit millions from her dead husband on one condition: she must stay away from other men. Two of the deceased's former associates se...
Fire Down Below
1997
as Sarah Kellogg
When an EPA representative is murdered in a small Appalachian community, EPA undercover agent Jack Taggart is sent in—posing as a handyman working wit...
The Last Time I Committed Suicide
1997
as Lizzy
Neal Cassady is living the beat life during the 1940s, working at The Tire Yard and philandering around town. However, he has visions of a happy life ...
Murder Live!
1997
as Pia Postman
Frank takes Pia Postman hostage on live TV, threatening to execute her after she accepts the blame for his daughter's suicide.
My Fellow Americans
1996
as Joanna (uncredited)
They used to run the country. Now they're running for their lives! Two on-the-lam former Presidents of the United States. Framed in a scandal by the c...
Conundrum
1996
as Det. Rose Ekberg
Two cops who share a devotion to their work—and to each other—suddenly find themselves caught in a tangled web of unspoken passions, lies and accusati...
Inflammable
1995
as Lt. (j.g.) Kay Dolan
An ambitious young female lawyer meets a former lover while investigating a sexual harassment case aboard a US Navy support ship that turns into a mur...
Species
1995
as Dr. Laura Baker
In 1993, the Search for Extra Terrestrial Intelligence Project receives a transmission detailing an alien DNA structure, along with instructions on ho...
Bad Boys
1995
as Alison Sinclair
Marcus Burnett is a henpecked family man. Mike Lowrey is a footloose and fancy free ladies' man. Both Miami policemen, they have 72 hours to reclaim a...
Just Looking
1995
as Darlene Carpenter
An architect becomes a voyeur when he spies upon his female neighbor.
Where Are My Children?
1994
as Vanessa Meyer Vernon Scott
Based upon a true story, Marg Helgenberger stars as a single mother mysteriously arrested by the FBI and separated from her children, thus beginning a...
Lie Down with Lions
1994
as Kate Nessen
Doctor Peter Husak introduces the American Jack Carver to his friend, nurse Kate, and it's love on first sight. But when she learns, in a dramatic inc...
The Cowboy Way
1994
as Margarette
Two championship rodeo partners travel to New York to find their missing friend, Nacho Salazar who went missing there.
Blind Vengeance
1994
A martial arts champion instructor gets involve in a conflict when he falls in love for one of his students, who happens to be ex-girlfriend of anothe...
Keys
1994
as Maureen 'Kick' Kickasola
A one-time investigator gets back in the game when a family suffers a trauma similar to her own.
Partners
1993
as Georgeanne Bidwell
A junior partner in a law firm, finds out that the wife of a very important client is a former college sweetheart.
When Love Kills: The Seduction of John Hearn
1993
as Debbie Banister
A woman places an ad in the "Soldier of Fortune" magazine to hire a contract killer.
Distant Cousins
1993
as Connie
Kate's husband Richard hasn't seen his cousin Harry for 20 years. So when he comes to stay with his fiancee Connie they are welcomed. But Kate senses ...
Through the Eyes of a Killer
1992
as Laurie Fisher
A woman has a brief affair with the contractor who is renovating her apartment and he refuses to accept the end of the relationship.
In Sickness and in Health
1992
as Mickey
A husband hires a nurse to care for his wife, who suffers from Multiple Scleroses, but a relationship soon develops between the two.
Crooked Hearts
1991
as Jennetta
An upper-middle class family in Washington state deals with failures, infidelities and troubling secrets. Charley is 26 and still lives at home, despi...
Death Dreams
1991
as Crista Westfield
Despite her husband's doubts, a woman reaches out to her dead daughter with a psychiatrist's help.
Blind Vengeance
1990
as Virginia Whitelaw
A man seeks revenge on the white supremacists acquitted in the murder of his son
Always
1989
as Rachel
The spirit of a recently deceased expert pilot mentors a newer pilot while watching him fall in love with the girlfriend that he left behind.
After Midnight
1989
as Alex (segment "All Night Operator")
A college professor teaching a course called "The Psychology of Fear" brings his students (including a psychic) to his home, one dark and stormy night...
China Beach: Pilot
1988
as K.C. Kolowski
The feature-length pilot for the popular tv series. In 1967, the people of the 510th Evac Hospital at China Beach Vietnam include the cool but compass...