Sepulchre October 1891: A young girl, Leonie Vernier, and her brother, are invited to a mysterious country house near Carcassonne. There in the 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 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.