 with a plot in which real historical figures play a substantial part, doing things which are the author's invention but which supposedly (for reasons given in the plot) remained secret and did not come to the knowledge of the public.In the book, a British doctor meets in 1936 with President Franklin D. Roosevelt, who is unaware that the doctor is a Nazi sympathizer.The visitor manages to secretly photograph the President in a compromising position with his secretary, Missy LeHand.