CSI: Crime Scene Investigation is an innovative, fast-paced drama that follows a crew of forensic investigators on the appropriately named "graveyard" shift at the top non-FBI Forensics lab in the country, located in Las Vegas, as they solve crimes by analyzing evidence with advanced forensic tools. Many of the shows are loosely based on real-life events, police cases, and situations.
The crew, headed by Gil Grissom, the senior investigator and the shift supervisor devoted to finding the truth through the latest forensic methods combined with old-fashioned research and intuition. Alongside Gil is Catherine Willows, a single mother struggling to balance her home life with the rigors of her demanding job as Gil's second-in-comand; Warrick Brown, whose knowledge of the gambling world helps the Las Vegas based crew, even as his addiction to it occasionally gets him into troubles; Nick Stokes, a self-proclaimed ladies man with an objective to find the wrong-doers; and Sara Sidle, the newest, outspoken member who often lets her troubled past get in the way of her job. The crew works along side Captain Jim Brass, the former head of the graveyard shift turned captain; Greg Sanders, a quirky lab tech (later switching to a field operative); and medical examiner Dr. Al Robbins.