Sleep is seductive, but hot sex is even better. Whenever petite blond research scientist Shea Caldwell walks into the office of security specialist Derek Oneiros, his chiseled muscles tense with need and his mind goes wild with fantasies about the silky curves under her business suits. By day their relationship is strictly professional, but at night Shea fulfills her desire for Derek in her dreams. Lately she's doing dangerous things in her sleep, though, and Derek is the only one who can help her. A mischievous Somnambulist is the source of Shea's sleepwalking, but when her groundbreaking research notes are stolen and she discovers candles burning all over her home, it's clear she has a stalker of another kind, too. As she and Derek fight the unseen forces that prey upon her while she sleeps, they also start indulging the sizzling erotic fantasies that keep them both up at night....