Hunted by a shadowy foe in Bloody Marys court, Brendan Prescott plunges into Londons treacherous underworld to unravel a dark conspiracy that could make Elizabeth queenor send her to her death. England, 1553. Harsh winter encroaches upon the realm. Mary Tudor has become queen to popular acclaim, and her enemies are imprisoned in the Tower. But when shes betrothed to Philip, Catholic prince of Spain, putting her Protestant subjects in peril, rumors of a plot to depose her swirl around the one person many consider to be Englands heir and only hope: the queens half sister, Princess Elizabeth. Haunted by his past, Brendan Prescott lives far from the intrigues of court. But his time of refuge comes to an end when his foe and mentor, the spymaster Cecil, brings him disquieting news that sends him on a dangerous mission. Elizabeth is held captive at court, the target of the Spanish ambassador, who seeks her demise. Obliged to return to the palace where he almost lost his life, Brendan finds himself working as a double agent for Queen Mary herself, who orders Brendan to secure proof that will be his cherished Elizabeths undoing. Plunged into a deadly game of cat and mouse with a mysterious opponent who hides a terrifying secret, Brendan races against time to retrieve a cache of the princess private letters, even as he begins to realize that in this dark world of betrayal and deceit, where power is supreme and sister can turn against sister, nothingand no oneis what it seems.