Episodes within the series follow a frequently recurring pattern, in which victims of hauntings begin noticing peculiar incidents that gradually become more frequent and bizarre. Denial is most often the first reaction. As the situation escalates, however, and every possible conventional explanation is explored and found wanting, they either contact a paranormal investigator, a member of the clergy, or a spiritual medium for assistance. In some cases, victims are able to successfully resolve their paranormal issues, while in others, victims are forced to vacate their residence. Certain episodes have also featured commentary from famed demonologist and clairvoyant Ed and Lorraine Warren, who have actually investigated some of the cases featured on the series. The episode "The Dark Side" was dedicated to the memory of Ed, who died in 2006.