The book was commissioned by Lord Longford and published by Sidgwick & Jackson and again by Gibson Square in 2003.

[1] The earlier edition sold 23, 000 copies according to Mosley's biographer, Jan Dalley.

[2] The American divorcée (Simpson) attracted media attention when she married Edward VIII of the United Kingdom.

In the revised 2003 edition, Mosley addresses latest allegations of secret service reports about the Windsors' conduct during the war and the abdication.

Mosley's biography was re-released in 2012 and an extract was published by the Daily Express.