Skydiving onto the deck of a moving freighter…at night…and then add bombs and explosions… In Superior Shoal, murder and mayhem stalk Jack Handler throughout the Great Lakes, culminating in the fiery sinking of a thousand-foot freighter in Lake Superior. The greatest challenge of his life…at night… His two fourteen-year-old foster boys have witnessed a murder and are being hunted down by the killer. At the same time Henry, Jack's best friend and right-hand man, is assaulted and nearly killed in an attempted revenge attack. To make the situation worse, his Chicago bar is targeted with an audit by former First Lady Allison Fulbright, his long-time nemesis, in an intricate plot to have him killed by his own clients. With everything except the sky crashing down on him, Jack calls on his daughter Kate, a New York City homicide detective, to come to their aid. Together with their good friend, Secret Service Agent Roger Minsk, they struggle through the greatest challenge of their lives.