Royce Harmon was murdered 3 months ago in a scene staged to look like a suicide. Now another murder has taken place. Whoever the killer is he has a thorough knowledge of forensics, he purposefully has left evidence, and has baffled Grissom and his team. Warrick and Nick investigate the case of a man who went over a cliff in his car and is now unconscious.

Grissom and Sara investigate a bug riddled body found in the desert. Warrick and Catherine look into the theft of some valuable art. Nick gets to find out why a missing woman's car is found at the bus station. Warrick is suspected of having gambled on duty.