Overview: At Cliveden House in Berkshire, Melvyn looks back to the Roaring Twenties to discover how the other half lived, when a group of bright young people created Britain's first modern cult of celebrity. The tragic story of Britain's original 'it girl', Elizabeth Ponsonby, is told by her niece Elizabeth. The current Lord Astor returns to his ancestral home to give a guided tour. And Martin Blaber explains what life was like below stairs for Cliveden's renowned head butler, his uncle, Edwin Lee.