William Petersen

William Petersen

544 Fans
Feb. 21st, 1953
Born in
Evanston, Illinois, USA
5' 10

William Petersen's Main TV Roles

Show Character(s)
CSI: Crime Scene Investigation TV Show
CSI: Crime Scene Investigation
Return to Lonesome Dove TV Show
Return to Lonesome Dove
Fallen Angels TV Show
Fallen Angels
TV Land Moguls TV Show
TV Land Moguls

Main Movie Roles

Guest TV Roles

[none found]


William Louis Petersen (born February 21, 1953) is an American actor and producer, best known for playing Dr. Gilbert "Gil" Grissom on the hit CBS series CSI: Crime Scene Investigation.

Petersen, the youngest of six children, was born in Evanston, Illinois, to parents who worked in the furniture business. His father was Danish-American Arthur Edward Petersen, Sr. (1907–2004) and his mother was German-American June Hoene Petersen (1909–2006). He has two brothers, Arthur, Jr. and Robert, plus three sisters: Anne, Mary Kay, and Elizabeth. He graduated from Bishop Kelly High School in Boise, Idaho, in 1972. He was accepted to Idaho State University on a football scholarship. While at Idaho State, Petersen took an acting course which changed the direction of his life. He left school along with his wife, Joanne, in 1974 and followed a drama professor to the Basque country where he studied as a Shakespearean actor. Petersen was interested in Basque culture and he studied the Basque language, Euskera, and gave his daughter the Basque name Maite Nerea (meaning My Beloved); she was born in Arrasate - Mondragón 1975. Petersen returned to Idaho intent on being an actor. Not wanting to work a non-acting job in Idaho, he returned to the Chicago area, living with relatives. He became active in the theater and earned his Actors' Equity card. He performed with the Steppenwolf Theatre Company, of which he has been an ensemble member since 2008, and was a co-founder of the Remains Theater Ensemble which also included other prominent Chicago actors Gary Cole and Ted Levine.

In 1985, Petersen received his first break when he starred as a Secret Service Agent gone rogue to avenge his mentor in William Friedkin's 1985 action film To Live and Die in L.A. The following year, Petersen starred in the first Hannibal Lecter film, Manhunter, playing FBI agent Will Graham. Because his role in Michael Mann's Manhunter was so emotionally exhausting, he did everything he could to rid himself of Graham after finishing principal photography. He shaved off his beard, cut his hair and dyed it blonde. He also claims to have done this because, while rehearsing for a play in Chicago, his dialogue was always coming out like Graham's; he dyed his hair so he could look in the mirror and see a different person.

In a 1990 ABC three-part miniseries, The Kennedys of Massachusetts, Petersen played U.S. President John F. Kennedy's enormously powerful father, Ambassador Joseph P. Kennedy. This film won an Emmy, and a Golden Globe from eight and two nominations, respectively. Also in 1990, Petersen delved back into history in Young Guns II portraying the infamous Patrick Floyd "Pat" Garrett, the one time friend of the famous outlaw Billy the Kid and the future sheriff of Lincoln County, New Mexico responsible for his downfall. In 1993, Petersen appeared in another miniseries, Return to Lonesome Dove, and in 1996's Fear. Having already portrayed Joseph and John F. Kennedy, another political character came his way with the 2000 release The Contender. Petersen played the role of Governor Jack Hathaway, an unscrupulous candidate for vice president following the death of the incumbent.

Since 2000, Petersen has gained his greatest fame starring as Dr. Gil Grissom in the CBS crime drama CSI: Crime Scene Investigation. Petersen took a break from CSI to appear in a five-week run of the Trinity Repertory Company production of Dublin Carol in Providence, Rhode Island. On the evening of Wednesday, May 30, 2007 Petersen was at Wrigley Field to join WGN radio sportscasters covering a Chicago Cubs – Florida Marlins game and he mentioned he had seen CSI: The Experience at the Museum of Science and Industry on the South Side of Chicago. He was on a nine-week break from the show at the time, and he expressed how he and his castmates were "blessed" to have such a successful series when he had seen shows starring friends cancelled after only a few episodes.

Petersen renewed his contract with CBS to appear on CSI for the 2008-2009 season, reportedly for $600,000 per episode. On July 15, 2008, the Associated Press reported that Petersen was leaving the show as a regular following Season 9's tenth episode in order to pursue more stage acting opportunities, but that he may return for guest spots. He also said that, if offered, he will reprise his role as Grissom as a regular again. He remains an executive producer of the show.

  • Calls _Long Gone (1987) (TV)_ (qv) the most fun he ever had making a movie. He made it instead of appearing in _Platoon (1986)_ (qv).
  • Winner of the Joseph Jefferson Award for Best Actor for his portrayal of Jack Abbott in "The Belly Of The Beast".
  • Shares his birthday with 'Larry Drake' (qv), who appeared with him in _The Beast(1996)_.
  • Started at Idaho State University on a football scholarship, where he found acting.
  • He has a production company called, High Horse (with friend & fellow _"CSI: Crime Scene Investigation" (2000)_ (qv) producer, 'Cynthia Chvatal' (qv)).
  • He has been an ensemble member of the Steppenwolf Theater Company in Chicago, Illinois since 2008.
  • Has played two characters with the surname "Walker." He played Gideon Walker in _"Return to Lonesome Dove" (1993)_ (qv) and Steve Walker in _Fear (1996)_ (qv).
  • He was awarded the 1984 Joseph Jefferson Award for Actor in a Principal Role in a Play for "In the Belly of the Beast" at the Wisdom Bridge Theatre in Chicago, Illinois.

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