
Actor
Marg Helgenberger
Born 1958 · Fremont, Nebraska, USA
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.
Acting

Erin Brockovich
Donna Jensen · 2000

Bad Boys
Alison Sinclair · 1995

A Dog's Journey
Hannah Montgomery · 2019

Under the Dome
Christine Price · 2013

CSI: Crime Scene Investigation
Catherine Willows · 2000

Tales from the Crypt
Vicki · 1989

ER
Karen Hines · 1994

Mr. Brooks
Emma Brooks · 2007

Frasier
Emily · 1993

King of the Hill
Mrs. Hanover / Pretty Student (voice) · 1997

Wonder Woman
Hera (voice) · 2009

Species
Dr. Laura Baker · 1995

CSI: Vegas
Catherine Willows · 2021

RuPaul's Drag Race
Self - Guest Judge · 2009

Always
Rachel · 1989

In Good Company
Ann · 2004

Late Night with Conan O'Brien
Self - Guest · 1993

All Rise
Lisa Benner · 2019

Intelligence
Lillian Strand · 2014

The Larry Sanders Show
Susan Elliot · 1992

Matlock
Victoria Rollins / Laura Norwood · 1986

Almost Friends
Samantha · 2017

Species II
Dr. Laura Baker · 1998

Fire Down Below
Sarah Kellogg · 1997