Christmas Eve 1892 and the falling snow is the stuff of fairytales. When the fairytale becomes a nightmare, an unorthodox young governess calls on the Doctor's help as Earth is once again threatened ...

Amy and Rory are trapped on a crashing space liner, and the only way The Doctor can rescue them is to save the soul of a lonely old miser. But is Kazran Sardick beyond redemption? And what lurks in ...