In April, 1923, I received a letter from the secretary of the University Club of Pasadena, my home city, asking if I would consent to lecture before the club on the subject of “The Goose-step.” I replied that I was busy, and made it a rule to decline invitations to lecture. Then came a telephone call from a member of the club, begging me to reconsider my decision; here were a group of men, influential in the community, some of whom had read “The Goose-step” and thought they could answer me, and wanted a chance to try. It would be an adventure for them, and might teach me something. To oblige a friend, I accepted, and the lecture was announced at a dinner of the club, and the announcement was published in the local newspapers—upon the club’s initiative, please note. At once the Black Hand got busy; and a week or two later a gentleman called at my home, obviously embarrassed and pink in the face, explaining that he was the president of the University Club of Pasadena. The executive committee had held a meeting the previous evening and decided that in view of certain objections, I should be respectfully requested to consent to have the lecture called off. Knowing my community, I was sympathetic towards the blushing respectable gentleman—an ex-naval officer who would have faced the guns of a foreign foe, but dared not face a new idea. I answered that I would be content to have the lecture forgotten. But an hour or two later a newspaper reporter called me up, asking if I had heard that the action of the University Club had been taken at the instance of William J. Burns, head of the Burns Detective Agency and chief of the United States Secret Service. Naturally, I was interested in that news; as a matter of tactics, when I find a man like Burns after me, I go to meet him head on. I at once telegraphed, asking Mr. Burns if it was true that he had called me “a dangerous enemy of the United States government.” The result was a tangle of falsehoods, and if I proceed to untangle them, do not think that I am rambling. Before we get through with this book we shall discover that the big private detective agencies are an important part of the educational system of the United States, and so what we learn about Mr. Burns and his methods will be to the point.