When a man with a tattoo covering his back is found floating in the water at the rice ceremony, Seikei and Judge Ooka know it's a bad omen—but not how dangerous the mystery behind it is. Soon, there are seven of these men with partial tattoos on their backs. All different, all seemingly unrelated— except for the tattoos, and the fact they keep turning up dead. It becomes apparent these men are not just carrying body art, but a treasure map…to what? And why is carrying this map so mortally dangerous? Seikei must find and assemble all seven tattoos to find the answer—and the path to a most terrifying destination. Another sensational samurai mystery by the masters of the genre: Edgar Award–winning duo Dorothy and Thomas Hoobler.