The Children of the King by Sonya Hartnett
A hauntingly beautiful wartime story with a ghostly twist - this is set to become a modern classic. It's the Second World War and, with London becoming an increasingly dangerous place to live, the Lockwood children are whisked away to the Heron Hall, to stay with their Uncle Peregrine in the countryside. But when they discover two strange boys hiding in a nearby derelict castle, the past and present collide. Those in the present will need to learn from the troubles of the past.