Surely a peaceful holiday in the Welsh mountains will keep the children out of trouble! But the mystery of a rumbling mountain soon has them thirsty for more adventure.

Philip, Dinah, Lucy-Ann and Jack are determined to explore the mountain and uncover its secret, but first they must escape from a pack of ravenous wolves and a mad genius who plans to rule the world!

About the Author

Enid Blyton is one of the most popular children's authors of all time. Her books have sold over 500 million copies and have been translated into other languages more often than any other children's author.

Enid Blyton adored writing for children. She wrote over 700 books and about 2,000 short stories. The Famous Five books, now 75 years old, are her most popular. She is also the author of other favourites including 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 loved dogs, gardening and the countryside. She was very knowledgeable about trees, flowers, birds and animals. Dorset - where some of the Famous Five's adventures are set - was a favourite place of hers too.

Enid Blyton's stories are read and loved by millions of children (and grown-ups) all over the world.