The Great Lakes Hustle

Here's a book description ready to paste straight into D2D:A disgraced Coast Guard officer. A retired schoolteacher carrying the wrong bag. A woman who spent forty minutes in a tree line in the rain, waiting. Cal Brecker left the Ninth District with a medical separation, a satellite phone he shouldn't still have, and forty-seven pages of findings that someone powerful wanted buried. Four years later, he's running salvage surveys on the Great Lakes when a Chicago research firm hires him to look at the Edmund Fitzgerald - not the wreck, but the manifest.
Specifically, the weight-differential tables that were quietly removed from the official record the spring a certain man got promoted. What follows moves fast and stays wet: a briefcase off the Mackinac Island ferry, a bag swap at a St. Ignace Dairy Queen, a Coast Guard nomination unraveling in federal court, and a crew of operators - some criminal, some retired, all competent - who keep finding themselves in the same rooms for reasons that only resolve at the bottom of Lake Superior.
The Great Lakes Hustle is a caper novel with cold water in its bones. Sharp dialogue, Great Lakes geography, and the particular satisfaction of watching a long-buried wrong get dragged back to the surface.