| Gil Grissom | |
|---|---|
| CSI: Crime Scene Investigation character | |
 | |
| First appearance | October 6, 2000 (CSI 1x01, "Pilot") |
| Last appearance | December 8, 2021 (CSI: Vegas 1x10, "Signed, Sealed, Delivered") |
| Portrayed by | William Petersen |
| City | Las Vegas Costa Rica Paris Peru |
| In-universe information | |
| Occupation | Crime Scene Investigator University Lecturer Wildlife Advocate Entomologist |
| Rank | CSI Level III Supervisor Entomology Specialist Governmental Consultant Freelance Consultant |
| Duration | 2000–2009, 2011, 2012, 2013, 2015, 2021 |
| Seasons | 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13 |
| Other Appearances | Immortality Without a Trace (6) CSI: Vegas |
| Born | August 17, 1956 Santa Monica, California |
Gilbert Arthur Grissom (born August 17, 1956[1]), Ph.D. is a fictional character portrayed by William Petersen on the CBS crime drama CSI: Crime Scene Investigation and its sequel, CSI: Vegas. Grissom is a forensic entomologist and for the series' first nine seasons, a CSI Level III Supervisor employed by the Las Vegas Police Department. He appeared in 193 episodes of the original series, where he was succeeded by Raymond Langston (Laurence Fishburne) and later D.B. Russell (Ted Danson). Grissom returned in the sequel series, CSI: Vegas, in 2021.
- ^ Source: Season 2, episode 13