Hounded. Haunted. Hunted. She is the most important person in the world. She is The Key. In the ancient Turkish city of Ruin, American journalist Liv Adamsen lies in an isolation ward staring at walls as blank as her memory. She knows she entered the monumental Citadel at the heart of Ruin but can remember only darkness. Something strange is stirring within her, whispering that she is 'the key'. But the key to what?