Mystery Moor isn't called by that name for nothing - as the Five are about to discover! There's something dangerous out there, and the gang mean to find out what it is, but they need some help. The travellers camped on the moor are no use - in fact, they're downright unfriendly. So the Famous Five have ...
"The Famous Five are on holiday in horse-drawn caravans -- and they've discovered a ruined castle nearby! But the castle isn't empty -- the Famous Five have seen a desperate face at the tower window! Who is hiding in the castle?"--Page 4 of cover.
