Sepulchre by Kate Mosse
October 1891: A young girl, Leonie Vernier, and her brother, Anatole, are invited to leave the gas-lit streets of Paris and travel south to a mysterious country house - La Domaine de la Cade - near Carcassonne. There, in the ancient, dark woods, Leonie comes across a ruined sepulchre and is drawn into a century's old mystery of murder, ghosts and a strange set of tarot cards that seem to hold enormous power over life and death. October 2007: Meredith Martin decides to take a break from her research trip in Paris - where she is studying Claude Debussy - and head down south to a beautiful hotel in the woods. She becomes fascinated by the history of the place and particularly by the tragic events of one Halloween night more than a century before that shocked the small community. Thus her fate becomes entwined with that of Leonie. But it is only when she too stumbles over a secluded glade in the forest that she realises that the secrets it contains are far from dead and buried...A haunting mystery of revenge and obsession, set against the rich backdrop of southern France, SEPULCHRE is the stunning new novel from the bestselling author of LABYRINTH.