Two decades after taking part in a childhood prank with devastating consequences, two cousins are reunited at a remote medieval castle in Eastern Europe, where they are cut off from the outside world and doomed to reenact the horrific event from their past.

To you, perceptive reader, I bequeath my history....Late one night, exploring her father's library, a young woman finds an ancient book and a cache of yellowing letters. The letters are all addressed to "My dear and unfortunate successor," and they plunge her into a world she never dreamed of-a labyrinth where the secrets of her father's past and her mother's mysterious fate connect to an inconceivable evil hidden in the depths of history.The letters...