256 pp. Frontispiece showing both sides of Dr. Graves' Secret Service card, three black-and-white photographic plates in text. "Armgaard Karl Graves (born May 7, 1882, in Berlin, probably died in the US) acted as a double agent for the German naval intelligence service and the British MI5 before the start of the First World War. He was fired from the German service and called a "double-dyed rascal."[2]"
