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