"First published 1948 by Macmillan Children's Books"--Title page verso. The Sea of Adventure is the fourth exciting instalment in the Adventure series by Enid Blyton, one of the best-loved children's writers of all time.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?