'The Blue Beast'--Edwardian slang for sexual passion--is the true account of the intimate lives of three extraordinary Edwardian women. Drawing on private family archives and highly revealing letters and diaries, the story examines how they became mistresses or confidantes of some of the most powerful men in Britain, men who profoundly affected the Empire's efforts in the First World War. The wealthy and voluptuous American adventuress, Emilie Grigsby,...