A bowling tournament is disrupted when an important piece of evidence is uncovered, leading the CSIs to investigate a murder at the same bowling alley.

Catherine takes the point in the investigation of an escalating series of peeping tom incidents. The crew is racing to stop the attacker before his crimes become more serious assaults….

Liv’s newest corpse is a sociopathic hitman, and she’s apathetically shocked to discover that she no longer feels emotions. Meanwhile, Marcy turns up as a full zombie and Ravi hopes…