Enid Blyton: The Famous Five 11 - Five have a wonderful time

The bolt was securely pushed home. Some somebody was a prisoner on the other side!

George has joined her cousins for an exciting caravanning holiday, where there’s a ruined castle on top of hill nearby.

Keen to explore it, the Five make plans to visit. But when they spot a desperate face in the tower window, they know there’s a mystery to solve…

Who is hiding inside the castle – and why?