The C.S.I. Las Vegas cast includes some of television’s best-known crime-drama actors, led originally by William Petersen as forensic scientist Gil Grissom, Marg Helgenberger as Catherine Willows, Gary Dourdan as Warrick Brown, George Eads as Nick Stokes, and Jorja Fox as Sara Sidle. Paul Guilfoyle, Eric Szmanda, Robert David Hall, and other performers also became important members of the long-running CBS series, which premiered in 2000 and concluded in 2015.
Who Was in the Original C.S.I. Las Vegas Cast?
The original cast established the characters and forensic team that made CSI: Crime Scene Investigation a defining crime series of the 2000s.
The series premiered on CBS on October 6, 2000, with Anthony E. Zuiker as its creator. The original ensemble centered on forensic investigators working in the Las Vegas crime laboratory, with detectives, medical examiners, and laboratory personnel supporting their investigations. CBS’s original press material listed William Petersen, Marg Helgenberger, Gary Dourdan, George Eads, Jorja Fox, Paul Guilfoyle, Robert David Hall, and Eric Szmanda among the principal performers.
William Petersen as Gil Grissom
William Petersen played Dr. Gil Grissom, the central forensic investigator and supervisor of the Las Vegas CSI team.
Grissom was portrayed as an experienced forensic scientist with a particular interest in entomology, the scientific study of insects. His methodical approach often focused on physical evidence rather than assumptions about suspects or motives. Petersen remained one of the show’s defining performers, appearing in 199 episodes according to IMDb’s series credits.
Marg Helgenberger as Catherine Willows
Marg Helgenberger played Catherine Willows, one of the show’s most prominent investigators.
Catherine began as a CSI and developed into a leadership figure within the Las Vegas team. Her character was associated particularly with bloodstain-pattern analysis and combined scientific investigation with strong knowledge of the people involved in each case. Helgenberger appeared in 265 episodes listed in IMDb’s series credits.
Gary Dourdan as Warrick Brown
Gary Dourdan played Warrick Brown, a Las Vegas CSI whose expertise and personal struggles became important parts of the series.
Warrick was one of the original investigators and worked closely with Grissom, Catherine, Nick, and Sara. His character had a background in chemistry and was portrayed as a skilled investigator who sometimes faced difficult personal circumstances. Dourdan appeared in 185 episodes according to IMDb.
George Eads as Nick Stokes
George Eads played Nick Stokes, one of the longest-serving investigators in the series.
Nick joined the original team and remained a major character throughout the show’s run. Unlike several other leading characters who eventually departed, Nick continued through the fifteenth season. IMDb credits Eads with 335 episodes, making Nick one of the most consistently present characters in the series.
Jorja Fox as Sara Sidle
Jorja Fox played Sara Sidle, a forensic investigator whose scientific ability and relationship with Grissom became significant parts of the story.
Sara joined the main story early in the first season; the pilot itself did not initially feature her among the central five investigators. She became one of the show’s most recognizable characters and ultimately returned for the series finale. IMDb credits Fox with 296 episodes.
Paul Guilfoyle as Jim Brass
Paul Guilfoyle played Captain Jim Brass, a homicide detective who frequently worked alongside the CSI team.
Brass provided the connection between traditional police investigation and forensic analysis. He often handled interviews and detective work while the CSI investigators concentrated on physical evidence. Guilfoyle appeared in 317 episodes according to IMDb’s series credits.
Eric Szmanda as Greg Sanders
Eric Szmanda played Greg Sanders, who began as a laboratory technician before becoming a CSI.
Greg’s character provided a bridge between the laboratory and crime-scene investigation. His scientific knowledge and sometimes unconventional personality made him an important supporting member of the team. IMDb lists Szmanda in 333 episodes of the series.
Robert David Hall as Dr. Al Robbins
Robert David Hall played Dr. Albert “Al” Robbins, the team’s chief medical examiner.
Robbins examined victims and helped investigators understand how and when people died. His medical expertise gave the series another scientific perspective beyond crime-scene processing. Hall appeared in 328 episodes according to IMDb.
Which Actors Joined the C.S.I. Las Vegas Cast Later?
The cast changed substantially over 15 seasons, with several new investigators taking leadership roles after original characters departed.
Because CSI ran for many years, its cast should not be understood as one fixed group. Major additions included Laurence Fishburne, Ted Danson, Elisabeth Shue, Elisabeth Harnois, and other performers who took on important roles at different stages of the series.
Laurence Fishburne as Ray Langston
Laurence Fishburne played Dr. Raymond Langston, who became a major CSI investigator after William Petersen’s reduced involvement in the series.
Langston brought a different background to the team and became one of the show’s principal investigators during the later Grissom era. IMDb credits Fishburne with 61 episodes as Ray Langston.
Ted Danson as D.B. Russell
Ted Danson played D.B. Russell, a later supervisor of the Las Vegas CSI team.
Russell became one of the principal figures during the show’s later seasons and worked with investigators including Nick Stokes, Sara Sidle, Greg Sanders, and Julie Finlay. Danson’s character was introduced in the eleventh season and remained through the end of the original series.
Elisabeth Shue as Julie Finlay
Elisabeth Shue played Julie “Finn” Finlay, a CSI who joined the team during the later seasons.
Finlay worked under D.B. Russell and became a significant investigator during the show’s final years. Shue is listed as a principal cast member in the fifteenth season alongside Danson and the returning ensemble.
Elisabeth Harnois as Morgan Brody
Elisabeth Harnois played Morgan Brody, another later addition to the Las Vegas crime laboratory.
Morgan became part of the investigative team during the show’s later period and worked alongside established characters such as Russell, Nick, Sara, and Greg. IMDb credits Harnois with 85 episodes.
Wallace Langham as David Hodges
Wallace Langham played David Hodges, a laboratory technician known for his detailed scientific knowledge and distinctive personality.
Hodges first appeared in the third season and eventually became one of the show’s longest-running supporting characters. IMDb lists Langham in 247 episodes, showing how significant the character became over time.
C.S.I. Las Vegas Cast and Characters at a Glance
The following table brings together many of the best-known performers and their roles:
| Actor | Character | Role in the Series |
|---|---|---|
| William Petersen | Gil Grissom | CSI supervisor and forensic scientist |
| Marg Helgenberger | Catherine Willows | CSI and later supervisor |
| Gary Dourdan | Warrick Brown | CSI investigator |
| George Eads | Nick Stokes | CSI investigator |
| Jorja Fox | Sara Sidle | CSI investigator |
| Paul Guilfoyle | Jim Brass | Homicide detective/captain |
| Eric Szmanda | Greg Sanders | Lab technician and CSI |
| Robert David Hall | Al Robbins | Chief medical examiner |
| David Berman | David Phillips | Assistant medical examiner |
| Wallace Langham | David Hodges | Laboratory technician |
| Laurence Fishburne | Ray Langston | CSI investigator |
| Ted Danson | D.B. Russell | CSI supervisor |
| Elisabeth Shue | Julie Finlay | CSI investigator |
| Elisabeth Harnois | Morgan Brody | CSI investigator |
| Jon Wellner | Henry Andrews | Laboratory technician |
| Liz Vassey | Wendy Simms | DNA technician |
| Louise Lombard | Sofia Curtis | CSI and law-enforcement investigator |
| Lauren Lee Smith | Riley Adams | CSI investigator |
These roles and performers are documented in the series’ cast listings from IMDb, Rotten Tomatoes, and CBS/Paramount press materials.
Why Did the C.S.I. Las Vegas Cast Change So Often?
The cast changed because CSI was a 15-season series in which major characters left, retired from the crime lab, or were replaced by new investigators.
William Petersen’s Gil Grissom, for example, moved out of the regular ensemble during the ninth season, while Laurence Fishburne subsequently became a major cast member as Ray Langston. Later, Ted Danson took over a leading role as D.B. Russell, creating another significant shift in the team’s leadership.
These changes allowed the show to continue its central forensic-investigation format while introducing different personalities and professional backgrounds. The core concept remained focused on evidence, laboratory science, crime-scene reconstruction, and police investigation rather than relying on a single lead character.
Who Was in the Final C.S.I. Las Vegas Cast?
The final season featured Ted Danson, Elisabeth Shue, George Eads, Jorja Fox, Eric Szmanda, Robert David Hall, Wallace Langham, David Berman, Elisabeth Harnois, and Jon Wellner among its principal cast.
Season 15 premiered on September 28, 2014, and consisted of 18 episodes. The season concluded on February 15, 2015, before the feature-length finale Immortality brought the original series to its conclusion.
The final ensemble therefore looked very different from the cast viewers saw in 2000. Grissom, Catherine, Warrick, and several other original characters were no longer regular members, while characters such as Russell, Finlay, Morgan, Hodges, and Henry had become important parts of the later team.
How Long Did CSI: Crime Scene Investigation Run?
CSI: Crime Scene Investigation ran from 2000 to 2015 for 15 seasons, making it one of the major long-running American forensic crime dramas.
The series premiered on October 6, 2000, and its regular run ended in February 2015. IMDb’s series listing credits Anthony E. Zuiker as creator and identifies William Petersen, Laurence Fishburne, and Ted Danson among the principal stars across the show’s history.
The episode count can vary slightly between databases depending on whether the two-part finale is counted as separate episodes or as a television movie. This is why some sources describe the series as having 335 regular episodes, while other listings count the finale separately and give a total of 337 installments.
Is CSI: Las Vegas the Same Show as CSI: Miami?
No. CSI: Crime Scene Investigation is the original Las Vegas series, while CSI: Miami is a separate spin-off featuring David Caruso as Horatio Caine.
The Las Vegas series focuses on the crime laboratory and investigators working in Nevada. CSI: Miami uses a similar forensic-crime format but has its own characters, setting, and cast. The distinction matters because searches for “CSI Las Vegas cast” can otherwise become mixed with information about the other CSI franchises.
What Made the Original Cast Important to the Series?
The original ensemble gave CSI several different approaches to forensic investigation instead of presenting one investigator as an all-purpose expert.
Grissom represented scientific analysis and careful observation, Catherine combined forensic work with leadership, Warrick and Nick brought different investigative perspectives, and Sara became an important scientific and emotional presence within the team. Jim Brass represented traditional homicide investigation, while Robbins and the laboratory staff supplied medical and technical expertise.
That combination helped establish the show’s recurring structure: investigators collect evidence, laboratory specialists analyze it, medical examiners determine information about victims, and detectives connect the scientific findings with the wider criminal investigation.
Frequently Asked Questions About the C.S.I. Las Vegas Cast
Who was the original star of CSI Las Vegas?
William Petersen was the central star of the original series, playing forensic scientist and CSI supervisor Gil Grissom. The original ensemble also included Marg Helgenberger, Gary Dourdan, George Eads, Jorja Fox, and Paul Guilfoyle.
Who replaced Gil Grissom on CSI?
Laurence Fishburne joined the series as Dr. Ray Langston after Petersen’s regular role was reduced. Later, Ted Danson joined as D.B. Russell and became another major leader of the Las Vegas team.
Was George Eads in all 15 seasons?
George Eads played Nick Stokes throughout the main 15-season run and is credited with 335 episodes by IMDb. Nick was one of the show’s longest-running central characters.
Was Jorja Fox in the original CSI cast?
Jorja Fox joined the main story in the second episode of the first season as Sara Sidle. She subsequently became one of the series’ most important recurring and main characters.
Who played D.B. Russell?
Ted Danson played D.B. Russell. The character became the Las Vegas CSI supervisor during the show’s later seasons and remained part of the series through its final period.
Conclusion
The C.S.I. Las Vegas cast changed considerably across the show’s 15-season run, but William Petersen, Marg Helgenberger, Gary Dourdan, George Eads, Jorja Fox, and Paul Guilfoyle established the original ensemble that defined the series. Later performers including Laurence Fishburne, Ted Danson, Elisabeth Shue, and Elisabeth Harnois helped carry the story into its final seasons. For readers exploring the franchise further, the character histories and the separate CSI: Miami and CSI: NY casts provide useful next points of comparison.