CSI: Crime Scene Investigation is an American crime drama television series created by Anthony E. Zuiker and executive produced by Jerry Bruckheimer, Carol Mendelsohn, Ann Donahue, William Petersen, Cynthia Chvatal, Naren Shankar, and Don McGill, among others.
Russell, an esteemed botanist, and Julie Finlay and Catherine Willows, blood spatter experts with extensive knowledge of criminal psychology, head a team who are on the case 24/7, scouring the scene, collecting the evidence, and finding the missing pieces that will solve the mystery.
Grissom and Willows were based upon real LVMPD Crime Scene Analysts David Holstein and Yolanda McClary.
[1] CSI originally starred William Petersen and Marg Helgenberger alongside an ensemble including George Eads, Gary Dourdan, and Paul Guilfoyle.
Fox would return for guest appearances during the ninth season in order to facilitate the departures of both Gary Dourdan and William Petersen, who were replaced by Lauren Lee Smith and Laurence Fishburne, respectively.
Smith departed the cast at the end of her first year, and was replaced by a returning Jorja Fox, who featured in a recurring capacity.
Series lead Marg Helgenberger departed the main cast in the twelfth episode of season twelve and was replaced by Elisabeth Shue.
Officers are most often seen entering and searching properties, although sometimes they are also seen involved in car chases or other forms of high speed pursuit.