Paris 1325. Margaret has been a widow for eleven years and doesn't expect a second chance at happiness. When it comes she seizes it with both hands. While Edward II's queen, Isabella, plots vengeance on the man who has taken her place at her husband's side, Margaret's cousin, Roger Mortimer, arrives in Paris. Mortimer is the king's most dangerous enemy and is soon sharing lodgings with the queen. Back in England Margaret and her new husband watch in horror as Isabella and Mortimer seize power in the name of the king's 14-year old son. Imprisonment, abdication and death follow and in the ensuing turmoil Margaret uncovers a dangerous secret. But she doesn't know who is a friend and who is an enemy, or where her husband's loyalties lie. Set in the French king's magnificent palaces and also the claustrophobic confines of the English court, The Queen's Spy tells the story of a deceit forged in the fires of treason and betrayal where no-one can be trusted and love will not protect you from the sins of the past.