CSI Crime Scene Investigation

On the day Grissom has to evaluate his team, a head is found in the trunk of a car. While Gil and Catherine work on the head, Sara and Nick investigate a body in the desert that's missing it's head.

The team is investigating the ongoing murders by a signature killer. The killer has some knowledge of forensics and has left little evidence behind.

Grissom and crew are called in after high roller Tony Braun, a known drug addict, is found dead in his house by a gardener.