Beautiful Catherine Holly is committed to a mental institution after witnessing the horrible death of her cousin at the hands of cannibals. Her rich aunt tries to influence a young neurosurgeon to surgically end Catherine's haunting hallucinations. By utilizing injections of truth serum, the neurosurgeon discovers that Catherine's delusions are in fact true and must confront the rich aunt about her own involvement in her son's violent death.

A month after Emma Callan and her family move into their seemingly picture-perfect Victorian home, Emma starts to have visions of a girl who appears to be her evil doppelganger. Since no one else has seen this entity, Emma is faced with two terrifying prospects: Either she's going insane or she's being haunted by a malevolent spirit.