Gary Dourdan as Warrick Brown
George Eads as Nick Stokes
Jorja Fox as Sara Sidle [ episode 2+ ]
Paul Guilfoyle as Captain Jim Brass
Robert David Hall as Dr. Al Robbins (episode 47+ recurring otherwise)
Marg Helgenberger as Catherine Willows
William Petersen as Gil Grissom
Eric Szmanda as Greg Sanders (episode 47+ recurring otherwise)
Jerry Bruckheimer - Executive Producer
Cynthia Chvatal - Executive Producer
Anthony E. Zuiker - Executive Producer
Ann Donahue - Executive Producer
Carol Mendelsohn - Executive Producer
William Petersen - Executive Producer
James C. Hart - Executive Producer
Jonathan Littman - Executive Producer
Danny Cannon - Executive Producer
Williiam Petersen - Executive Producer
Anthony E. Zuiker - Creator
CSI follows six Las Vegas Crime Scene Investigation forensic officers led by the enigmatic Gil Grissom. Grissom leads the graveyard shift, on his team are Catherine Willows, Sara Sidle, Nick Stokes, Warrick Brown and there favorite Lab Tech Greg Sanders. Other people around to help the CSI'S are the Chief Medical Examiner Dr.Al Robbins, Ballistics lab tech guy Bobby Dawnson, Trace Lab David Hodges, and Homicide Detective Jim Brass among many others. They are the people who are called when a murder happens or a crime is committed. The CSI'S use evidence to find there suspect and to make sure they end up in jail.
Catherine Willows: Catherine was born on March 26, 1963 in Bozeman, Montana she weights about 104 pounds and her height is about 5'6". She has nice Blue eyes and she has strawberry short blonde hair
Catherine is a single mom to a 9 year old daughter named Lindsay. Catherine used to work as a Vegas Dancer, stripper, but now being a CSI and mother is her life. Catherine is a CSI Level 3 and she's been at the job for 10 years and lived in Vegas for 20 years.

Warrick Brown: Warrick was born on October 10, 1971 in Las Vegas, Nevada. He is the only one on the CSI team that was born and raised in Vegas. Warrick is 6'2" and he weights about 190 pounds. His eyes are green and his hair is brown. He is a CSI Level 3 and he has been working as a CSI for 6 years. Warrick had a gambling problem earlier in his life and it has only a few times gotten mixed in his work as a CSI. One time it had interfere with his duties, and that nearly cost him his job. He was put on administrative leave when Holly Gribbs was killed, but helped Brass catch Judge Cohen when he tried to fix the outcome of a trial. Warrick straightened out, despite the overwhelming gambling temptations that abound in Vegas, and even investigated dead body cases at a casino he used to gamble at.

Sara Sidle: Sara was born on September 16, 1971 in a place called Tamales Bay.
Sara is 5'8" and she weights about 107 pounds. Her eyes and hair are brown and her hair goes to her shoulders. Sara received a B.S. in Physics from Harvard and when she was a student in collage she was a student of Gil Grissom's. Grissom taught a lecture and Sara was in his class, they became friends and she became a CSI in San Francisco, then she was called by Grissom to come to Las Vegas. When Holly Gribbs died she came and became a part of the CSI team in Vegas. She is quiet like Grissom and has a funny realshipion with her co-workers. 

Nick Stokes:  Nick was born on August 18, 1971 in Dallas, Texas, he is the youngest of 7 kids*
He is 5'10" and he weight's 155 lbs. Both his eyes and hair are brown in colour and he has a killer smile. Nick is a CSI Level 3 and is known as a ladies man. He has been a CSI for a long time and when he first joined to become a CSI was because he wanted to carry a gun. He is a funny, smart and is good to be around when your feeling down.
William was the youngest of six children born to a family in Evanston, Illinois. While he excelled at sports, his academic grades were poor, so while at Idaho State University his advisors recommended he take acting classes in order to boost his grade point average. Little did they know that William would flourish in the theatrical atmosphere, so much so that after he left school, Willian and Joanne (his girlfriend who soon became his wife) went to Spain where they started a Shakespeare company.
Soon he and his wife (and new daughter) moved back to Evanston, where he dabbled in other jobs, but the lure of the theater took him to Chicago where he earned his Actor's Equity card in 1979 at the Victory Gardens Theater. With longtime friend Cindy Chvatal and actor Gary Cole, they co-founded the Remains Theater, where Petersen honed his acting abilities. His portrayal of Jack Henry Abbott in Belly of the Beast: Letters from Prison earned his the Joseph Jefferson award for best actor, which he reprised at the Kennedy Center and in London.

He also received Joseph Jefferson Award nominations for The Tooth of the Crime and The Night of the Iguana. He appeared in a number of regional productions, including The Time of Your Life, A Streetcar Named Desire, Glengarry Glen Ross, Fool for Love and Speed-the-Plow. His Broadway debuted was in a revival of Tennessee Williams' Night of the Iguana.
His talent soon came to the attention of film directors, and he was asked to read for William Friedkin's cop thriller, To Live and Die in L.A. That film led to more, such as Manhunter, Cousins and Fear. In 1990, William and Cindy Chvatal formed High Horse Films. Their first project was Hard Promises, in which William starred with Sissy Spacek.

On television, he has been seen in Long Gone, The Rat Pack, , 12 Angry Men, The Kennedys of Massachusetts (which won a Golden Globe Award), the sci-fi miniseries The Beast and Keep the Change, which he also produced. It was only when CSI came along that Petersen decided to commit to his first television series, which he also produces.
Petersen resides with his wife in Los Angeles, and became a grandfather for the first time in October 2003.
Born: February 21, 1953
Birthplace: Evanston, IL
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