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:...
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Erin Brockovich
As Donna Jensen
Species II
As Dr. Laura Baker
In Good Company
As Ann
Mr. Brooks
As Emma Brooks
Bad Boys
As Alison Sinclair
Species
As Dr. Laura Baker
My Fellow Americans
As Joanna (uncredited)
The Last Time I Committed Suicide
As Lizzy
Columbus Day
As Alice
Fire Down Below
As Sarah Kellogg
Wonder Woman
As Hera (voice)
After Midnight
As Alex (segment "All Night Operator")
The Cowboy Way
As Margarette
Thanks of a Grateful Nation
As Jerrilynn Folz
Happy Face Murders
As Jen Powell
Crooked Hearts
As Jennetta
Through the Eyes of a Killer
As Laurie Fisher
Death Dreams
As Crista Westfield
Lethal Vows
As Ellen Farris
Lie Down with Lions
As Kate Nessen
Perfect Murder, Perfect Town: JonBenét and the City of Boulder
As Patsy Ramsey
Distant Cousins
As Connie
Conundrum
As Det. Rose Ekberg
Gold Coast
As Karen DiCilia
Blind Vengeance
As Virginia Whitelaw
Inflammable
As Lt. (j.g.) Kay Dolan
Where Are My Children?
As Vanessa Meyer Vernon Scott
CSI: Immortality
As Catherine Willows
China Beach: Pilot
As K.C. Kolowski
Giving Up the Ghost
As Anna Hobson
Almost Friends
As Samantha
Just Looking
As Darlene Carpenter
In Sickness and in Health
As Mickey
Keys
As Maureen 'Kick' Kickasola
When Love Kills: The Seduction of John Hearn
As Debbie Banister
Always
As Rachel
Murder Live!
As Pia Postman
This Changes Everything
As Self
A Dog's Journey
As Hannah Montgomery
Partners
As Georgeanne Bidwell
The Ellen DeGeneres Show
As Self
The Tony Danza Show
As Self
Spenser: For Hire
As Nancy Kettering
CSI: Crime Scene Investigation
As Catherine Willows
thirtysomething
China Beach
As KC Koloski
LIVE with Kelly and Mark
King of the Hill
As Mrs. Hanover / Pretty Student (voice)
Tales from the Crypt
As Vicki
This Week
The View
As Self
Frasier
As Emily
The Early Show
As Self
Late Night with Conan O'Brien
As Self - Guest
ER
As Karen Hines
Shell Game
Intelligence
As Lillian Strand
Tony Awards
As Self - Presenter
Under the Dome
As Christine Price
Intimate Portrait
As Self
The Tommyknockers
As Bobbi Anderson
Fallen Angels
As Eve Cressy
Matlock
As Victoria Rollins / Laura Norwood
CSI: Vegas
As Catherine Willows
Perfect Murder, Perfect Town: JonBenét and the City of Boulder
As Patsy Ramsey
The Price Is Right
As Self
RuPaul's Drag Race
As Self
All Rise
As Lisa Benner
Stars in the House
As Self
Golden Globe Awards
As Self - Audience Member
