William Petersen was born in Evanston, Illinois, USA as William Louis Petersen. He is a producer and actor, known for CSI: Crime Scene Investigation (2000), To Live and Die in L.A. (1985) and Manhunter (1986).
He has been married to Gina Cirone since June 14, 2003. They have two children. He was previously married to Joanne Brady.
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