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...
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...
Known For
Cast Credits
A Dog's Journey
as Hannah Montgomery
Almost Friends
as Samantha
CSI: Immortality
as Catherine Willows
Wonder Woman
as Hera (voice)
Columbus Day
as Alice
Mr. Brooks
as Emma Brooks
In Good Company
as Ann
Erin Brockovich
as Donna Jensen
Lethal Vows
as Ellen Farris
Happy Face Murders
as Jen Powell
Giving Up the Ghost
as Anna Hobson
Thanks of a Grateful Nation
as Jerrilynn Folz
Species II
as Dr. Laura Baker
Gold Coast
as Karen DiCilia
Fire Down Below
as Sarah Kellogg
Murder Live!
as Pia Postman
My Fellow Americans
as Joanna (uncredited)
Conundrum
as Det. Rose Ekberg
Inflammable
as Lt. (j.g.) Kay Dolan
Species
as Dr. Laura Baker
Bad Boys
as Alison Sinclair
Just Looking
as Darlene Carpenter
Where Are My Children?
as Vanessa Meyer Vernon Scott
Lie Down with Lions
as Kate Nessen
The Cowboy Way
as Margarette
Keys
as Maureen 'Kick' Kickasola
Partners
as Georgeanne Bidwell
When Love Kills: The Seduction of John Hearn
as Debbie Banister