Magyk by Angie Sage

Enter the world of Septimus Heap, Wizard Apprentice. Magyk is his destiny. A powerful necromancer plans to seize control of all things Magykal. He has killed the Queen and locked up the Extraordinary Wizard. Now with Darke Magyk he will create a world filled with Darke creatures. But the Necromancer made one mistake. A vital detail he has overlooked means there is a boy wh Enter the world of Septimus Heap, Wizard Apprentice. Magyk is his destiny. A powerful necromancer plans to seize control of all things Magykal. He has killed the Queen and locked up the Extraordinary Wizard. Now with Darke Magyk he will create a world filled with Darke creatures. But the Necromancer made one mistake. A vital detail he has overlooked means there is a boy who can stop him - the only problem is, the boy doesnt know it yet. For the Heap family, life as they know is about to change, and the most fantastically fast-paced adventure of confused identities, magyk and mayhem, begin.