We last saw our hero in Mountains of the Misbegotten and Heywood delivers an even more thrilling mystery. Lute Bapcat and Pinkhus Zakov had been partners in the far northern counties of Michigan's Upper Peninsula for years when in early 1917, Zakov suddenly disappeared. A year later, Bapcat and Jordy (now 18) get a summons to Marquette, by former President Teddy Roosevelt. (Bapcat had served as a Roughrider with Roosevelt back in the day.) Roosevelt...