Dr. Alex Delaware first meets beautiful and emotionally fragile actress Zelda Chase when called upon to evaluate her young son. Years later, Alex is unexpectedly reunited with Zelda when she is committed after a bizarre psychotic episode. But tragedy strikes and after her release, Zelda is discovered dead in the grounds of a palatial L.A. Estate, and her son missing. 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. And when other victims vanish from the same upscale neighborhood, worry turns to terror. As Alex and Milo unveil each devastating revelation and damning clue, Alex's brilliant mind is challenged as never before - and his determination grows to see a killer caged and the truth set free.