It's a book by Patrick Ness, inspired by an idea from Siobhan Dowd.
I picked up this book because many Ambagers were raving about it. I'll be succinct: it's a beautiful book. The characters are immediately engrossing, and the atmosphere of the book immediately sucks you in, aided in no small part by Jim Kay's illustrations, which are nothing short of hauntingly brilliant.
It's about a boy named Conor, who is visited shortly after midnight by a monster. Not the monster from his nightmare, the one he's had nearly every night since his mother started her treatments. This monster is different; it's something ancient and wild, and it wants the most dangerous thing of all from Conor: it wants the truth.
The book is haunting, lonely, sad, painful, and hopeful. I was immediately drawn into its world, and the ending came far too soon, but it felt right. It's very unique -I've never read another book like it- and it's undoubtedly a masterpiece.
This short review is also short on details, but that's partly because my emotions took too much of a beating for me to able to type anything particularly profound. I would encourage anyone and everyone to read this book.