When a policeman kills another officer, the CSIs must look to the evidence to determine if the shooting was premeditated or an accident.

When Stokes learns that a man he helped put in prison is going to have his conviction overturned, the CSI team needs to prove the killer is guilty again or he will be released.

Season finale: The investigation of a triple homicide leads to the discovery of corruption running rampant throughout the LVPD. The closer they get to the truth, the more serious are the repercussions. To be continued...

D.B. Russell leads the CSI team on a hunt to find his kidnapped granddaughter.

When a girl is shot and killed at a large rave in the desert, the CSI team has to search for clues, find her missing friend and bring the killer to justice.