The Faceless Ones (Skulduggery Pleasant, Book 3) - by Derek Landy
She’s twelve. He’s dead. But together they’re going to save the world. Hopefully.
The third book in the bestselling Skulduggery Pleasant series.
You've seen it all before: some bad guy wants to bring about the end of the world. A few people get hurt, sure, but everything's all right in the end. Well… not this time.