Grissom and Catherine investigate when a leg is found severed from a body in a lake. They suspect the husband and boyfriend. Meanwhile Sara and Nick investigate a fraternity pledging gone terribly wrong.

Catherine violates department protocol when she takes the case of a rape accusation against her ex-husband. Warrick and Sara search for the missing bullet that will either exonerate or indict a cop for murder. Grissom and Nick investigate when a female skeleton is found under a house buried in cement.