A mysterious trip to the desolate Northern Isles soon turns into a terrifying adventure when Bill is kidnapped! Marooned far from the mainland on a deserted coast, Philip, Dinah, Lucy-Ann, Jack and Kiki the parrot find themselves playing a dangerous game with an unknown enemy. Will they escape with Bill and their lives?
The second exciting installment in Enid Blyton's Adventure series Nothing could be more exciting than a daring night flight on Bill's plane. But Philip, Dinah, Lucy-Ann, Jack, and Kiki the parrot soon find themselves flying straight into a truly amazing adventure. Who are the two strange pilots, and what is the secret treasure hidden in the lonely and mysterious valley where the children land?