Wealthy Andrew and Helga Graymoor adopted ten children, but Andrew really didn't care for them, so he left his money in the form of a tontine--last one standing takes the whole jackpot. Now two of adult children have been murdered, and some of the rest are beginning to wonder whether a family member is behind the deaths. They all gather on the remote Connecticut island where they were raised for Helga's birthday party, when a hurricane hits, cutting them off from all help. Unfortunately, the ending--while appropriately scary--is not really quite satisfying.