Wolf Jack Caffery Series, Book 7.

A family's beloved country home becomes a nightmarish prison in the brilliant, terrifying seventh novel in internationally bestselling author Mo Hayder's Jack Caffery series. A young girl comes across an injured dog in a park but doesn't tell anyone what the battered scrap of paper attached to its collar says: "Help us." Oliver Anchor-Ferrers is recovering from heart surgery at his grand country home with his family when his wife discovers som...