Playing With Fire - Derek Landy, HarperCollins Publishers

He’s dead. She’s deadly. The bad guys don’t stand a chance. The second book in the bestselling Skulduggery Pleasant series. Vengeous. Dusk. Sanguine. Three of the deadliest killers alive are in town to resurrect an unstoppable creature of horrifying power… And only Skulduggery Pleasant and Valkyrie Cain stand in their way. ‘A thoroughly satisfying blend of humour, magic and adventure’ Rick Riordan, author of the Percy Jackson series