As her New York Times bestselling novels always remind us, Anne Perry is a matchless guide to both the splendor and the shame of the British Empire at the height of its influence. In her twentieth William Monk mystery, she brings us to London's grand Mayfair mansions, where the arrogant masters of the Western world hold sway--and to the teeming Thames waterfront, where one summer afternoon, Monk witnesses the horrifying explosion of the pleasure...