Michelle Miller is a chronic sleepwalker. She and her husband Dan Miller are trying to have their first child after she had a miscarriage the year before. One night she sleepwalks into the bedroom of her neighbor Luke Williams while his wife Nancy is out of town. They have sex; she is unaware of this but he not only knows about it but falls madly in love with Michelle and decides he wants to leave Nancy for her. Michelle gets pregnant, but doesn't know whether the baby is Dan's or Luke's.—Mark Gabrish Conlan

Luke, whose nymphomaniac wife Nancy just picked another fight, is unable to resist when his neighbor and colleague Dan's foxy wife Michelle climbs under his sleeping couch sheets for hot sex and sleepwalks off again without a word. Luke enjoys another visit, her best friend's husband Tyler however just sees her returned. Dan systematically fetches her, having ignored the alarm, and takes her to Dr. Thorston's sleep clinic, where she's prescribed hypnotic tapes. Unwitting Michelle wrestles free when Luke tries to have a quickie at his construction site, and tells police detective Bennett, who soon suspects links with a shooting from a mystery van and the apparent disappearance of Nancy, possibly prelude to Luke's murder at home.—KGF Vissers