Catherine is called in by a pornographic-film developer to view graphic footage from a snuff movie in which a woman is brutally slain. Grissom investigates an ant covered body that's been dead over a year.

Grissom, Warrick, and Nick investigate the case of man who apparently was murdered and pushed off a six story building. Grissom's involvement is cut short by renewed hearing problems. Catherine looks into the murder of a man outside of his regular bar.