Dora Baldini (Daria Nicolodi), her son Marco (David Colin Jr.) and her new husband Bruno Baldini (John Steiner) move into Dora's former home, from her first marriage, after Dora is released from a mental institution following the mysterious death of Dora's abusive first husband. With Bruno away as a commercial airline pilot, Dora is left alone with her son Marco and her shattered memory of the events of her husband's death, caused by extensive electroconvulsive therapy she received while institutionalized. Her insanity grows when she believes that her son has become possessed by the ghost of his deceased father, leading to Dora learning the truth about her first husband's death: she murdered him after he forcibly injected her with heroin and lysergic acid diethylamide. When she contacted Bruno for help, he hid her dead husband's body in the basement behind a wall, while arranging for Dora to be placed in an insane asylum, as the drugs injected into her caused her to have a nervous breakdown. Now killing her new husband, Dora is compelled by her husband's ghost (and her guilt) to commit suicide. The ending shows Marco, the sole survivor, having tea with his father’s ghost (who is invisible).