Who Plays Grissom on CSI
William Petersen portrays Dr. Raymond Langston Grissom in the original CSI series. He played the lead forensic investigator from the pilot in 2000 through most of the show's run. Petersen's portrayal defined the character's calm, methodical approach to crime scene analysis.
The character became a central figure in the forensic procedural genre, with Petersen appearing in over 300 episodes across multiple seasons. His performance established Grissom as a benchmark for the scientifically minded lead in crime dramas.
William Petersen Career Timeline
Before CSI, Petersen built a career in theater and film, including a notable role in the 1985 film To Live and Die in L.A.. He later gained wider recognition for his role as Gil Grissom, which became his most iconic character.
After leaving CSI in 2009, Petersen returned for guest appearances and reprised the role in the 2021 CSI: Vegas revival. He has also produced and starred in other projects, maintaining a presence in both film and television.
Current Projects and Legacy
As of the latest public information, Petersen continues to be associated with the CSI franchise through periodic appearances and production involvement. He remains a recognizable figure in the procedural drama space, with his work on CSI frequently cited in industry retrospectives.
The character of Grissom has influenced a generation of fictional forensic investigators, and Petersen's performance is often referenced in discussions of the best TV detectives. The original CSI series remains one of the highest-rated dramas in television history, with its spin-offs and revivals continuing the legacy.