The spirit of FBI agent Finn Ryker finds himself trapped in a house and becomes increasingly frustrated from being unable to communicate to others about the threat of a serial killer on the loose in New Orleans. He begins acting out in a poltergeistic manner to gain the attention of the tenants. Unfortunately, he succeeds a little too well, causing the owner to hire a specialist that debunks hauntings. In walks Livy van Ives, who is hired to disprove the paranormal activity and repair the reputation of the house. Contrary to her own beliefs, Livy soon discovers that she can communicate with the spirit, which sets her on the investigative path, along with her "hallucination", to catch a serial killer.