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).
Erin Brockovich
⭐ 7.4Species II
⭐ 5.164In Good Company
⭐ 6.1Mr. Brooks
⭐ 6.935Bad Boys
⭐ 6.824Species
⭐ 5.974My Fellow Americans
⭐ 6The Last Time I Committed Suicide
⭐ 5.1Columbus Day
⭐ 5Fire Down Below
⭐ 5.733Wonder Woman
⭐ 7.179After Midnight
⭐ 5.5The Cowboy Way
⭐ 5.677Thanks of a Grateful Nation
⭐ 4Happy Face Murders
⭐ 4.8Crooked Hearts
⭐ 5.7Through the Eyes of a Killer
⭐ 5.7Death Dreams
⭐ 5.9Lethal Vows
⭐ 5.7Lie Down with Lions
⭐ 3.7Perfect Murder, Perfect Town: JonBenét and the City of Boulder
⭐ 5.6Distant Cousins
⭐ 5.5Conundrum
⭐ 5.8Gold Coast
⭐ 5.8Blind Vengeance
⭐ 1Inflammable
⭐ 5Where Are My Children?
⭐ 5.9CSI: Immortality
⭐ 7.2China Beach: Pilot
⭐ 0Giving Up the Ghost
⭐ 6Almost Friends
⭐ 6.3Just Looking
⭐ 3.5In Sickness and in Health
⭐ 1Keys
⭐ 3.7When Love Kills: The Seduction of John Hearn
⭐ 1Always
⭐ 6.266Murder Live!
⭐ 5.5This Changes Everything
⭐ 6.2A Dog's Journey
⭐ 8.053Partners
⭐ 4.2Blind Vengeance
⭐ 1Peacemaker
⭐ 10