In book eleven, the Famous Five are on an adventurous holiday in horse-drawn caravans. They discover a ruined castle that looks deserted. But is that a face at the window? Or is it a trick of the light?

Just who is hiding in the castle?

This 70th anniversary edition features the text from the Classic edition. Its cover has been illustrated by Steve Antony, but there are no inside illustrations. All anniversary editions, each illustrated by a different artist, benefit the House of Illustration, the world’s first dedicated home for the art of illustration (houseofillustration.org.uk).

Enid Blyton

Enid Blyton’s books have sold over 500 million copies and have been translated into other languages more often than any other children’s author.

She wrote over 700 books and about 2,000 short stories, including favourites such as The Famous Five, The Secret Seven, The Magic Faraway Tree, Malory Towers and Noddy.

Born in London in 1897, Enid lived much of her life in Buckinghamshire and adored dogs, gardening and the countryside. She died in 1968 but remains one of the world’s best-loved storytellers.