The Archbishop of Canterbury's request for help from former spy Sebastian St. Cyr, Viscount Devlin, is undeniably intriguing: The bodies of two men have been found in an ancient crypt, their violent deaths separated by decades. One is the Bishop of London, the elderly Archbishop's favored but controversial successor. And the last person to see him alive was Miss Hero Jarvis, with whom Sebastian shares a strained, and complicated, relationship.

"June 1815. The people of London wait, breathlessly, for news as Napoleon and the forces united against him hurtle toward their final reckoning at Waterloo. Among them is Sebastian St. Cyr, Viscount Devlin, frustrated to find himself sidelined while recovering from a dangerous wound he recently received in Paris. When the mutilated corpse of Major Miles Sedgewick surfaces from the murky waters of the Thames, Sebastian is drawn into the investigation...