Drawing on four years of research around the world, a new biography of the glamorous couple behind the modern royal family, from the award-winning author Andrew Lownie.

The intimate story of a unique marriage that spans the heights of glamour and power to infidelity, manipulation and disaster through the heart of the 20th century.

DICKIE MOUNTBATTEN: A major figure behind his nephew Philip's marriage to Queen Elizabeth II and instrumental in the Royal Family taking the Mountbatten name, he was Supreme Allied Commander of South East Asia during World War II and the last Viceroy of India.

EDWINA MOUNTBATTEN: Once the richest woman in Britain and a playgirl who enjoyed numerous affairs, she emerged from World War II as a magnetic and talented humanitarian worker loved around the­ world.

From British high society to the South of France, from the battlefields of Burma to the Viceroy's House, The Mountbattens is a rich and filmic story of a powerful partnership, revealing the truth behind a carefully curated legend.

Was Mountbatten one of the outstanding leaders of his generation, or a man over-promoted because of his royal birth, high-level connections, film-star looks and ruthless self-promotion? What is the true story behind controversies such as the Dieppe Raid and Indian Partition, the love affair between Edwina and Nehru, and Mountbatten's assassination in 1979?

Based on over 100 interviews, research from dozens of archives and new information released under Freedom of Information requests, prize-winning historian Andrew Lownie sheds new light on­ this remarkable couple.