The author of the New York Times bestselling The Bartimaeus Trilogy brings listeners an exciting new adventure about three teens who break into a forbidden castle and lay themselves open to the lure of its past history and mystery.

A chance encounter on the snowy slopes of a castle moat throws together three lonely teenagers: Emily, Simon, and the highly imaginative but enigmatic Marcus. At first the castle's ruins are merely the backdrop to a day in the snow. But when the three break in to the forbidden interior of the keep, they find the castle taking on a different and deeper meaning. Despite the freezing conditions, they spend the night there, to experience the power of occupation. But when the re-enactment gets out of control and a very real siege ensues, their playful dare soon turns into a frenzy of nightmarish action.