Marg Helgenberger
Actor

Marg Helgenberger

Marg Helgenberger is credited on 22 movies and 16 TV shows, best known by TMDB votes for Bad Boys, Under the Dome and Erin Brockovich.

Born November 16, 1958 in Fremont, Nebraska, USA.

Filmography · 38 titles

US streaming apps shown for the 12 best-known titles, checked October 5, 2026. Tap any title for where it streams and what it costs.

About 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...

Biography from TMDB, written by its community.

Do you know what you spend on streaming each month?
See the fix