Julian, Dick, Anne, George and Timmy the dog find excitement and adventure wherever they go in Enid Blyton's most popular series. Meet Julian, Dick, Anne, George and Timothy. Together they are THE FAMOUS FIVE - Enid Blyton's most popular adventure series. All 21 titles also available as audiobooks! In book sixteen, it's 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.