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. 윌리엄 피터슨(1953년생, Evanston, Illinois, USA) 는 배우로, 대표작으로 페이탈 피어, 리브 앤 다이, 영 건 2가 있으며, 그 외에도 CSI: 라스베가스, Late Show with David Letterman, FBI 실종수사대, 환상특급(1985), CSI: 베가스, Sacrée soirée, 폴링 엔젤스, 맨해튼, 디태치먼트, 비정의 거리, 블루, The Directors 등 다양한 작품에 출연했다. (오뜨랑에서 실시간으로 번역된 한글 프로필도 확인할 수 있어요) 2021년 CSI: 베가스에서 Gil Grissom 역을 맡았다. 2021년 CSI: 베가스 제작에 참여했다. 2021년 Three Short Plays by Tracy Letts에서 Ted 역을 맡았다.