Aimee DeShayes

Vivien and Violet find themselves in a dangerous situation eerily similar to a past event. Ben goes back to Boston to fix a mistake.

Grissom stuns his colleagues by announcing that he is to leave the team. His final case involves a decomposed body that is connected to the crimes of a known serial killer, and his investigation soon leads him to join forces with a university professor.

Langston and the team are plunged into the murky world of Mexican wrestling when a former student of Langston's is killed. The young woman was researching an 11-year-old case of three women killed by a known serial killer for her graduate thesis. Was she killed because she got too close to exposing the murderer?