Another thrilling instalment in Enid Blyton's Adventure series - with a stunning retro look to appeal to a New generation of readers Who are the two strange pilots, and what is the secret treasure hidden in the lonely valley where the children land? Nothing could be more exciting than a daring night flight on Bill’s plane! But Philip, Dinah, Lucy-Ann and Jack soon find themselves flying straight into a truly amazing adventure. About The Author: Enid Blyton, who died in 1968, is one of the most popular and prolific children’s authors of all time. She wrote over seven hundred books, which have been translated into many languages throughout the world. She also found time to write numerous songs, poems, and plays, and ran magazines and clubs.