The year is 1871. Prince von Ahrensburg, Austria's military attache to St. Petersburg, has been killed in his own bed. The murder threatens diplomatic consequences for Russia so dire that they could alter the course of history. Leading the investigation into the high-ranking diplomat's death is Chief Inspector Ivan Putilin, but the Tsar has also called in the notorious Third Department - the much-feared secret police - on the suspicion that the murder is politically motivated. As the clues accumulate, the list of suspects grows longer; there are even rumors of a werewolf at large in the...