The Possession of Joel Delaney" is a story of demonic possession, much on the order of "The Exorcist," but in many ways more believable. A young man has his body taken over by the soul of a serial killer. His sister tries to find out why his behavior has so drastically changed, and her quest takes her into the Voodoo underground of Manhattan's Spanish Harlem. The plot develops slowly but builds to a powerful, unexpected finish in which the sister and her two young children are lured to a secluded beach house and threatened by the knife wielding brother.