Grissom comes from a place where we know he had a deaf mother, he was raised in a silent household, on some level, had a father who potentially was not around and he learned what he knew by himself in the back yard, with bugs and animals. He's not comfortable being a supervisor and that's his problem.

President John F. From 2000 to 2010 he played Dr.  ???
The Time of Your Life.

Gilbert "Gil" Grissom on the hit CBS series CSI: Crime Scene Investigation Richard Chance in the film To Live and Die in L. and as Will Graham in the film Manhunter. William Louis Petersen (born February 21 1953) is an American actor and producer best known for playing Dr.