Stephanie Plum is back at work, but she has to keep an eye on her Grandma Mazur, a recent widow. Grandma was married very briefly to a mobster, actually for about 45 minutes, when her hubby Jimmy died of a heart attack. But his associates, the “Lazy-Boys” (named for the chairs they all hang out in) are convinced that Grandma has the keys to a fortune that they want in on. Stephanie has her usual co-horts: Lulu, Morelli, and Ranger, but can she locate the keys in time to save Grandma? Check it out…