Dr Alex Delaware first meets beautiful and emotionally fragile actress Zelda Chase when called upon to evaluate her five-year-old son. Years later, he is unexpectedly reunited with her when she is involuntarily committed after a bizarre psychotic episode. But tragedy strikes and shortly after her release, Zelda is discovered dead in the grounds of a palatial LA estate. Having experienced more than enough of the city's dark side to recognise the scent of evil, Alex turns to his friend, LAPD Lieutenant Milo Sturgis, for help in finding the perpetrator, while he searches for Zelda's missing son. But when other victims vanish from the same upscale neighbourhood, worry soon turns to terror.