The Secret Mountain / The Secret of Killimooin : Secrets - 2 in 1 (Paperback) Enid Blyton

The Secret Mountain: Jack, Peggy, Mike and Nora run off to Africa on a desperate search for their parents who are being held captive in the Secret Mountain. But where is the mountain? And who are the strange red-hared people who live there? The rescue seems destined to fail... The Secret of Killimooin: Jack, Peggy, Mike and Nora are sure the Killimooin Mountains and the forest they surround hide the headquarters of a band of robbers who raid the countryside by night. When they find a way into the forest, they're determined to investigate...