I was drawn in immediately by the suspense of the situation, then as the supernatural aspect was worked in and the long term historical implications, this just made me want to keep reading. Going from the cover, which shows a modern structure, all the way back in time the linkage is intriguing. In an age of conspiracy theories every where, our minds now race to make connections of all sorts, so I think that helps create even more interest in figuring out what will happen and why.