When a young married couple move into an old Victorian cottage located in the New England countryside, they soon learn there is more to the urban legend she is investigating than they originally believed. Susan Anders is researching the "Warning Killer," a serial killer who has struck every twenty-five years for the last century, always leaving a young couple brutally murdered. Now the "Warning Killer" has set his sights on the Anders-Susan and her husband, Justin. They must solve the mystery of the previous murders and set things right before they become his latest victims.