Marg Helgenberger is an award-winning American actress who has many credits to her name. Marg is most recently well known for her portrayal of Catherine Willows in the CBS television crime drama CSI: Crime Scene Investigation. During the end of the 80s and early 90s, Helgenberger also had a role as K.C. Koloski in the ABC television drama China Beach. In 1990, Helgenberger won an Emmy Award for Outstanding Supporting Actress in a Drama Series in her role.

On the big screen, she is known for her role as Dr. Laura Baker in Species, the voice of Hera in Wonder Woman, and as Ann Foreman in the movie In Good Company. Others films or television series where Marg Helgenberger had roles or appearances include Bad Boys, Crooked Hearts, The Cowboy Way, among others.

Other notable television series where Marg Helgenberger had roles and appearances include ER, Gold Coast, Murder Live, Happy Face Murders, The Tommyknockers, as well as others.