Meet Julian, Dick, Anne, George, and Timmy. Together they are the FAMOUS FIVE - Enid Blyton's most popular adventure series. In book eighteen, the Famous Five are searching for the lost underground passages of a ruined castle at Finniston Farm. The friends are determined to find them and whatever they hold, but they are not alone. Can the Famous Five get there first? This edition includes the original cover and interior illustrations by Eileen Soper.