The Secret of Spiggy Holes
by Enid Blyton
While on vacation by the sea, Mike, Peggy, Nora and their friend Jack — who has been reunited with their parents — go exploring the caves on the beach. Soon after, they discover a secret passage to the Old House on a rock where they find a kidnapped young prince in captivity! The friends hatch a bold plan to help the prince escape – but will he succeed?