The story of CSI is set in Las Vegas, a gambling city. It is adapted from a true story and tells the story of how the forensic crime investigators of the Criminal Police Bureau obtain evidence at the crime scene to solve the case. The investigators' famous saying is "the dead body can talk". They use fingerprints, shoe prints, bullet shells, bloodstains, hair, fibers, body scars and other tiny evidences, and after careful analysis and research, they find the key to solving the case. The process of solving the mystery is quite attractive.