“Book Descriptions: The children are back! - but a air-crash and an unsteerable raft quickly land them in deep waters. Rescued by a mad librarian, they're soon off on a dangerous quest across the wilds of Ribblemoor, exploring haunted flare-paths. Can they uncover the ancient mysteries of a secret tribe? Can they survive the dangers of Lightning Tor? Inspector Cuthbertson is right behind them, determined to destroy the school for good: it's the final conflict...” DRIVE
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