Another thrilling instalment in Enid Blyton's Adventure series- with a stunning retro look to appeal to a new generation of readers Something very sinister is happening on the mysterious Isle of Gloom and the children are determined to uncover the truth! But Philip, Dinah, Lucy-Ann and Jack are not prepared for the dangerous adventure that awaits them in the abandoned copper mines and secret tunnels beneath the sea. 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 club