Marg Helgenberger

 Mary Marg Helgenberger, born on the 16th of November, 1958, is an American actress. Her career began in the late 1980s. She first became famous for her character in Siobhan Ryan in a daytime soap opera which ran from 1982 until 1986. She is most famous for her roles in the role of Catherine Willows in the CBS police procedural drama CSI: Crime Scene Investigation (2000-13) and the following TV movie Immortality (2015) as well as K.C. Her most well-known role is her role as Catherine Willows in the CBS drama series police procedural Crime Scene Investigation (2000-13) and the subsequent TV film Immortality (2015) and as K.C. She was born in North Bend, Nebraska and graduated from North Bend Central High School. Helgenberger is of Irish and German descent[2] and had a Roman Catholic upbringing. She has an older sister named Ann and younger brother named Curt. Helgenberger was a member of the high school's marching band's French horn section. Helgenberger would like to become a nurse, just like her mother. She attended Kearney State College located in Kearney, Nebraska. After she graduated, she enrolled in Northwestern University's School of Speech, Evanston, Illinois (now the School of Communication), and earned an B.S. degree in speech and drama.