William Louis Petersen is an American actor and producer, best known for playing Dr. Gilbert “Gil” Grissom on the hit CBS series CSI: Crime Scene Investigation, Richard Chance in the film To Live and Die in L.A., and Will Graham in the film Manhunter. Born in Evanston, Illinois, Petersen attended Idaho State University on a football scholarship, where he first tried acting and immediately joined the drama department, before leaving to work in the Basque country as a Shakespearean actor. Peterson embraced the Basque lifestyle, influencing his work, family and art. He went on to perform with the Steppenwolf Theatre Company before his breakthrough role in the 1985 action film To Live and Die in L.A. Peterson’s success was immediate, landing him the role as Will Graham in the first adaptation of Michael Mann’s Hannibal Lecter series. His film and television success includes numerous crime dramas and thrillers, providing him the perfect background for his decade-long role as Dr. Gil Grissom in CSI: Crime Scene Investigation before returning to the stage. On February 3, 2009, Petersen was honored with a star on the Hollywood Walk of Fame.
2000 • TV
2002 • TV
1985 • TV
2021 • TV
1996 • Movie
1990 • Movie
as Steve Walker
as Patrick Floyd 'Pat' Garrett
as John F. Kennedy
as Joe Starling
as Jess
as Mr. 'Sarge' Kepler
as Juror 12
as Katz & Jammer Bartender
as Richard Chance
as Self
as Joad
as Jack Flynn
as Himself
as Jackson Connolly
as Trucker
as Frank Scanlan
as Stud Cantrell
as Whip Dalton
as Tom Hardy
as Stephen Guerin
Executive Producer
Producer
as Gil Grissom
194 episodes
as Gil Grissom
1 episodes
as (segment "Need to Know")
1 episodes
as Gil Grissom
10 episodes
as Self
1 episodes
as Col. Emmett Darrow
10 episodes
as Georgie
1 episodes
as Mitch
1 episodes
as Self
1 episodes
as Captain Gideon Walker
4 episodes
as Whip Dalton
2 episodes
as Joseph P. Kennedy Sr.
3 episodes
Executive Producer
Producer
Executive Producer
