The Fuehrermaster - The Falcon File, #1

Spring, 1941. Britain's Prime Minister Winston Churchill is on the verge of being overthrown by an English lobby group of Nazi appeasers who plan to sign a secret pact with Adolf Hitler to end the war in Europe. Hitler gets wind of the overthrow. He feels that the British group are ready to cut a deal on his terms, and that only one man, Rudolf Hess, can pull it off for the Fatherland. Through secret channels, Gestapo chief Heinrich Himmler, who has his own ambitions to be Fuehrer, finds out what Hess and Hitler are attempting.
Across the channel, Churchill's group is ready. Young hot-shot American intelligence agent, Wesley Hollinger, on loan to the British Secret Service, uncovers Heinrich Himmler's plan to eliminate Hess and plant an imposter... The Fuehrermaster is the first book in the Falcon File series.