«From the bestselling author of Labyrinth and Sepulchre comes an absorbing new adventure, steeped in the haunting secrets of the Languedoc. Summer, 1942. A spirited and courageous young woman, Sandrine, finds herself drawn into the world of the Resistance in Carcassonne under German occupation. Her network — code named Citadel' is made up of ordinary women who risk everything to fight the sinister battles raging the the shadows around them. As the war reaches its violent and bloody conclusion, Sandrine's fate is tied up with that of three very different men. But who is the real enemy? Who is the real threat. And who is the true guardian of the ancient secrets that for generation have drawn people to the foothills of the Pyrenean mountain. This is the story of Citadel — an epic of passion, loyalty, courage and betrayal. Kate Mosse is the author of three works of non-fiction, three plays and five previous novels, including the number one bestsellers, Labyrinth, Sepulchre and the Winter Ghosts. Her novels have been translated into thirty-seven languages.»