CSI: Vegas
2021 · Catherine Willows
A Dog's Journey
2019 · Hannah Montgomery
Wonder Woman
2009 · Hera (voice)
Mr. Brooks
2007 · Emma Brooks
In Good Company
2004 · Ann
Erin Brockovich
2000 · Donna Jensen
Species II
1998 · Dr. Laura Baker
Fire Down Below
1997 · Sarah Kellogg
Species
1995 · Dr. Laura Baker
The Cowboy Way
1994 · Margarette
After Midnight
1989 · Alex (segment "All Night Operator")
China Beach
1988 · KC Koloski
November 16, 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.