Artemis Fowl and the Opal Deception by Eoin Colfer - old paperback

Age :6-11

Evil pixie, Opal Koboi, is back and shes more dangerous than ever. This time she doesnt just want power over the fairy People - this time she wants the humans too. Captain Holly Short is the only fairy with a hope of stopping her, but as Holly knows, it takes one genius criminal mastermind to fight another. Paperback , 368 pages Published April 6th 2006 by Penguin UK (first published April 30th 2005)