As Billy is still an Executive Producer on CSI, he can still be contacted at the address below.

William Petersen
C.S.I. c/o CBS Television
7800 Beverly Blvd., Room 18
Los Angeles, CA 90036-2615

Further instructions available in our FAQs

Please be cautious of people online claiming to be Billy. The Petersen's themselves have confirmed to us that Billy does not use the computer, so if you do run into someone claiming to be Billy on a forum/website, etc. this person is a fake!

If you think you have encountered someone online claiming to be Billy, please do not hesitate to contact us.