In Miami Beach, all hell is breaking loose. First, a swimmer makes a gruesome discovery in a rowboat, and soon after the city is rocked by an explosion. When Detective Sam Becket's sister-in-law Claudia becomes a blackmail victim, Sam wants to help her and Grace, but he has a vicious killer to find. His only lead is Mildred Bleeker, a local character who's seen a frightening stranger: a young man, silver from head to toe, shimmering in the night - who put her in mind of the angel of death. Cal the Hater learned about pain and humiliation from an expert. Now he's found a way to make others suffer too, and he's getting a real taste for it. Another explosion, another body, Mildred's in danger, and Claudia's troubles have landed on the Beckets' doorstep - but nothing could prepare them for what Cal has in store. The unthinkable is about to happen.