Grissom is intrigued when he finds an exact miniature replica of a crime scene involving a famous ex-rock star, and goes about trying to solve the case using the clues provided. Meanwhile, Catherine again finds both herself and someone close to her in danger, and begins to suspect who may be responsible.
Grissom stuns his colleagues by announcing that he is to leave the team. His final case involves a decomposed body that is connected to a known serial killer.
The CSIs are immersed in the theatrical mystery of the Cirque du Soleil after a corpse falls from the rafters. Catherine is drugged.
Forensic drama series finale, written and directed by Quentin Tarantino. Time is running out for the CSIs as they race to save one of their own.