Home People William Petersen William Petersen shows William Petersen shows William Petersen TV Shows (9) Without a Trace (2002) He was 49 years old CSI: Crime Scene Investigation (2000) As Gil Grissom, He was 47 years old CSI: Crime Scene Investigation (2000) He was 47 years old The Directors (1999) He was 45 years old The Beast (1996) As Whip Dalton, He was 43 years old Return to Lonesome Dove (1993) As Captain Gideon Walker, He was 40 years old Fallen Angels (1993) He was 40 years old The Kennedys of Massachusetts (1990) As Joseph P. 'Joe' Kennedy, Sr., He was 36 years old The Twilight Zone (1985) He was 32 years old
