Something has always lived in Winthrop House... After his book becomes a best-seller, novelist Jack Ripley moves into a house on the edge of Cutler Harbor with his wife and two daughters. Nearly a century old, Winthrop House is newly-restored and boasts a gorgeous oceanfront view. But everything is not what it seems. Though picturesque, Jack learns that the house has been shunned for decades by the locals, owing to a number of mysterious disappearances and inexplicable deaths on the grounds. The Ripleys begin to grapple with the property's vile reputation, learning more about its sordid history and experiencing strange things within its walls. What was once a dream home quickly becomes a nightmare for the family as they encounter the terrifying presence that has existed there since times immemorial.

"They say the Jackal Man lives in that house..." Months after a family is forced to flee the beachfront property on 100 Winthrop Road, three young travelers lost outside of Cutler, Maine find themselves taking shelter in it. Strapped for cash, the three of them spend a night in the house, wondering why the lovely old building has been left abandoned. They don't have to wonder for long. Strange things take place in the empty house. Noises come from behind the walls, and its occupants feel as though they're being constantly watched. The townsfolk are quick to warn them away from the property, sharing with them bits and pieces of its terrible history. But by then, it may already be too late. Winthrop House has a mind of its own, and the entities that dwell there won't rest until they have what they want.