In the 22nd McGurk mystery, the kids are on the trail when a reclusive crime writer disappears after putting them in his latest book. There are enough clues, secret codes, false leads, and complications to keep McGurk and his officers hopping, plus appearances by a reformed adversary, Lady Thumb (from The Case of the Four Flying Fingers, 1981), and a shady villain with eyes like the ""tips of a couple of tungsten drills."" Hildick makes entertaining use of Edgar Allan Poe tales in unraveling this methodically plotted puzzler; suspense and motivation are minimal.