Meet Julian Dick Anne George and Timothy. Together they are THE FAMOUS FIVE - Enid Blytons most popular adventure series. All 21 titles also available as audiobooks! In book sixteen its holiday time at Billycock Hill and the Famous Five make new friend - a real pilot! But when he disappears with top secret equipment the Five begin to wonder if their new friend could be a spy or worse a traitor. Whatever his motives the gang feel duty-bound to investigate... This edition features the original cover art and inside illustrations by Eileen Soper.