The Famous Five are having a brilliant time -- on holiday in horse-drawn caravans -- and they've discovered a ruined castle nearby! The castle looked deserted from a distance -- but is that a face at the window? Or is it a trick of the light? The Famous Five just have to find out! Just who is hiding in the castle?

The Famous Five are having a brilliant time -- on holiday in horse-drawn caravans -- and they've discovered a ruined castle nearby! The castle looked deserted from a distance -- but is that a face at the window? Or is it a trick of the light? The Famous Five just have to find out! Just who is hiding in the castle?