The Children of the King by Sonya Hartnett

Internationally acclaimed author Sonya Hartnett tells a hauntingly beautiful story set during World War II.

Cecily and Jeremy have been sent to live with their uncle Peregrine in the English countryside, safe from the war, along with a young refugee named May. But when Cecily and May find two mysterious boys hiding in the ruins of a nearby castle, an extraordinary adventure begins.