Person · Actor

Marg Helgenberger

Born

November 16, 1958

From

Fremont, Nebraska, USA

Also:
Actress

Credits on file

Decades active

In short · Acting since 1987, 5 decades active, 50 credits.

Known for

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Biography

Mary Marg Helgenberger (born November 16, 1958) is an American actress who began her career in the early 1980s. She first gained recognition for her role as Siobhan Ryan on the daytime soap opera *Ryan's Hope* from 1982 to 1986. She is best known for portraying Catherine Willows in the CBS police procedural drama *CSI: Crime Scene Investigation* (2000–13) and the subsequent TV movie *Immortality* (2015), a role she later reprised in the sequel *CSI: Vegas* (2022–present). Helgenberger also played K.C. Koloski in the ABC drama *China Beach* (1988–91), for which she received the 1990 Emmy Award for Outstanding Supporting Actress in a Drama Series. She has appeared in other TV series such as *Under the Dome* and *Intelligence*, as well as films including *Species* (1995), *Species II* (1998), *Erin Brockovich* (2000), and *Mr. Brooks* (2007).

Filmography · 47 of 47

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