When the maid of a fancy hotel in a casino finds a woman with the throat slit in a room, the CSI team investigates the case. They note that the woman is not in her room, her throat was "gently" slit and her husband is missing. While investigating, Nick meets an old schoolmate that is a valet and talks too much about the case that appears in the news. The CSI team finds her car in the parking lot with her husband dead inside. Soon they are summoned to a crime with the same MO in a cheap motel, but the body of the husband inside an ice machine. They conclude that husbands are forced to kill their wives by a sick serial-killer. Their further investigation shows a couple that might be the killer, and they seek them out.
—Claudio Carvalho, Rio de Janeiro, Brazil