The Secret Seven are siblings Peter and Janet, and Jack, Barbara, Pam, Colin and George. Together they are The Secret Seven - ready to solve any mystery, any time - in Enid Blyton's classic series of 15 mystery novels.
In book nine, a girl has mysteriously run away from home and her parents are frantic with worry.
Can the Secret Seven follow the clues and catch up with the girl, or will Susie, Jack's troublesome little sister get in the way?
First published in 1957, this edition features the original text and artwork.
Published to coincide with the celebrations marking the centenary of Enid Blyton's birth, this adventure story features the Secret Seven, reissued in its original form.
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 600 books and hundreds of 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.