Without Churchill's inspiring leadership Britain could not have survived its darkest hour and repelled the Nazi menace. Without his wife Clementine, however, he might never have become Prime Minister. By his own admission, the Second World War would have been 'impossible without her'. Clementine was Winston's emotional rock and his most trusted confidante. Yet her ability to charm Britain's allies and her humanitarian efforts on the Home Front earned her deep respect. Now Sonia Purnell explores the peculiar dynamics of this fascinating union.