Jackie French 
Lilies, Lies and Love (Miss Lily, #4) 

As the King of England wavers between duty and love, Sophie knows that she must choose duty. The year is 1936 and the new King Edward VIII wishes to marry American divorcee, and suspected German agent, Wallis Simpson. Top-secret documents that the king must read and sign are being neglected for weeks, and some are even turning up in Berlin.And as Germany grows its military might with many thousands of new fighter planes every year, Britain and its empire are under increasing threat.Can Miss Lily’s most successful protege, Sophie Vaile, the Countess of Shillings, seduce the new king, prevent his marriage to Wallis Simpson, and turn him from fascism?And if a man can sacrifice his life for his country, should a woman hesitate to sacrifice her honour?Based on new correspondence found in German archives, Lilies, Love and Lies is a work of fiction.Or is it?In the fourth title in the Miss Lily series, Jackie French explores one of the most controversial events in history that saw the unthinkable happen when a king chose love over duty.