Beckett and Castle discover giant footprints at the site of a vicious murder, leading the team to wonder if Bigfoot is the killer.
A deadly bomb explosion at a Vegas office building sends Grissom and the CSI team in search of a serial bomber, and their primary suspect is the building's overly helpful security guard who knows more than he should about blowing things up.
When a single human bone is discovered in the desert, Grissom and Catherine must cover miles of territory to find the rest of the skeleton.
A woman is abducted from a mall parking garage. She's raped, beaten, shot and left for dead. Sara collects evidence from her and grows attached to her.
Grissom and Sara are called to the crime scene when two murder victims are found hidden in pipes at a construction site in the middle of an alfalfa field, while Catherine and Nick investigate an ostensible hunting accident.
