Description：The night shift of the Las Vegas Police Department's Crime Forensics Division, led by Gil Grissom, is tasked with going deep into the crime scene for clues and using the most advanced scientific and technological means to piece together the clues that are seemingly unconnected and meaningless into irrefutable evidence, reconstructing the case and leaving criminals nowhere to escape... This series showcases a large number of cutting-edge high-tech detective technologies: ballistics, criminal risk factor science, forensic toxicology, DNA rupture identification, bite mark and blood type analysis, odontology, traceology, criminal abnormal psychology, etc., and has therefore set off a global "forensic medicine boom." Currently, there are nine seasons of CSI.Las.Vegas. In addition, there are two types of CSI.: Miami and NY.