I have no idea how to rate this book.... On one hand, it was very engaging and interesting (especially when the main character, Jack, would go to Marbury via the lens), but on the other, it was confusing (at first) and a little... creepy. I had trouble with figuring out what was going on & I'm still a little fuzzy as to why Jack getting kidnapped was necessary. Maybe that's just me missing something though; I might get an epiphany later. The creepy part was the, "Roll. Tap. Tap. Tap." (I think explaining this would spoil the book though) I also got extremely angry about the lenses because Jack really seemed like an addict with those. (The author described him as such a few times as well.)