Vincent, a man with mild schizophrenia, is released from an asylum to assist Detective Inspector Bruce with a serial killer case. The killer is another escaped inmate. Vincent uses his psychological skills to get inside the killer's mind and help the investigation. However, there is a risk Vincent may give in to his own dangerous impulses. The three act structure involves the antagonist continuing to kill, Vincent and Bruce finding bodies, and eventually the antagonist jumps to his death while Vincent's identity is revealed.