In Enid Blyton's thrilling adventure, Philip, Dinah, Lucy-Ann, and Jack join Bill Smugs for a bird-watching holiday on Scotland's wild northern coast. But their peaceful trip turns dangerous when enemy spies arrive, hunting a famous scientist under Bill's protection. When Bill mysteriously disappears, the four children—armed only with courage and their talkative parrot Kiki—must survive alone among rugged islands and ancient castles. Hiding from ruthless villains, sailing stormy seas, and relying on cleverness and friendship, the young adventurers unravel a sinister plot and rescue their friend in this gripping tale of suspense, bravery, and the mystery of the sea.
