Sam turns to the one person in the kingdom who he believes can answer that question and solve the bizarre murder--the Duke of Aldridge's odd but brilliant ward, Kendra Donovan.

While Kendra has been trying to adapt to her new life in the early nineteenth century, she is eager to use her skills as a twenty-first century FBI agent again. And she will need all her investigative prowess, because Sir Giles was not an average citizen. He was one of England's most clever spymasters, whose life had been filled with intrigue and subterfuge.

Kendra's return to the gritty streets and glittering ballrooms of London takes her down increasingly dangerous paths. When another body is discovered, murdered in the same apparently ritualistic manner as Sir Giles, the American begins to realize that they are dealing with a killer with an agenda, whose mind has been twisted by rage and bitterness so that the price of a perceived betrayal is death.