Paperback.
Enid Blyton's The Famous Five find adventure wherever they go. Julian, Dick, Anne, George and Timmy the dog always have a mystery to solve!
Originally published: London: Hodder & Stoughton, 1961.
The Famous Five have heard the stories about treasure on Demon's Rocks, but they never thought they were really true, but then they discover a very old and valuable gold coin and what was a myth becomes real.