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Helgenberger played the French horn in her high school (North Bend Central High School) marching band.Until she went to college, Helgenberger wanted to be a nurse like her mother. Helgenberger at the 1990 Emmy Awards, Helgenberger got her start as a nightly weather girl at KHGI-TV Kearney, Nebraska while attending college (her name was changed by the producer to Margi Mc Carty).After portraying the role of Blanche Dubois in a university production of A Streetcar Named Desire, she developed an interest in acting.While performing in a summer 1981 NU campus production of Shakespeare's Taming of the Shrew, where she played Kate, Helgenberger was spotted by a scout for the TV soap opera Ryan's Hope.Visit our FAQ at section for answers to these questions and more.
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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 of Irish and German descent Marg has one older sister named Ann and a younger brother named Curt.
One of her first jobs, as a teenager, was spending her summers and her Christmas breaks working as a "deboner" at the meat packing plant where her father was employed.
She is best known for her roles as Catherine Willows in the CBS police procedural drama CSI: Crime Scene Investigation (2000–12, 2013) and the subsequent TV movie Immortality (2015) and as K. Koloski in the ABC drama China Beach (1988–91), which earned her the 1990 Emmy Award for Outstanding Supporting Actress in a Drama Series.