CSI star William Petersen looks unrecognizable five years after retiring from Hollywood… see him now at 72

CSI: Miami alum David Caruso who quit Hollywood 13 years ago steps out… see him at 70

80s star who played a prostitute on iconic drama before landing original CSI is unrecognizable

CSI: Miami star chillingly talks being stalked for 12 years by crazed fan who signed threats 'Freddy Krueger'