I read this book a couple of months ago and I really, really enjoyed it. It was, indeed, quite peculiar itself.
It is about a boy, Jacob Portman, who convinces his parents to let him travel to Wales (The UK) in order to learn about the truthfulness of his grandfather's stories -- who has recently died in what seems to Jacob some very strange circumstances. The old man used to tell him stories about his notoriously exceptional adventures with some really strange friends of his in an orphanage for war refugee children when he was little. At some point he stopped believing them, but he's not so sure they're not true anymore...
I have to say I bought this book for its appealing title and wonderful cover, but it definitely did not let me down. I found the story very new and original, and I surely did not expect what was coming. I think the characters are very interesting -- the main one is quite strongly developed while the rest are not a much, though I believe it was made on purpose, so nicely done (no spoilers, you'll see!).