Officers of the American Protective League 200 LINE CUTS IN THE TEXT PAGE A German attaché reminds Bernstorff of Wedell 6 The successful use of a fraudulent passport 18 Von Papen and Albert appear as unneutral plotters 28, 29 The card “of the guileless stranger from Tokyo” 31 Von Papen becomes accessory to a crime 33 Two of Ruroede’s visitors’ credentials 34 Horn’s application for a furlough 39 Werner Horn’s plan of escape 41 Werner Horn’s commission in the German army 48, 49 Werner Horn’s confession 56, 57 The _Lusitania_ warning 94, 95 Code message transmitting money to Sir Roger Casement 137 A letter from John Devoy, an Irish-American, exposing his hand in a plot with the Germans 140 Extracts from a German code expert’s blotter 147 Bolo’s handwriting 148 A tale told in cablegrams 150, 151 The Cohalan-Irish Revolution message 154, 155 INTRODUCTION Espionage has always been to Americans one of the hateful relics of an outworn political system of Europe from which America was fortunately free. We lived in an atmosphere not tainted with dynastic ambitions or internal oppression. We had no secret agents spying and plotting in other countries and were slow to suspect other countries of doing such things here. The war, however, disillusioned us. We found our soil to be infested with representatives of an unscrupulous Power which did not hesitate to violate our hospitality and break its most sacred pledges in using this country as a base for unneutral plots against France and Great Britain. We soon learned that these plots were directed against us as well. They were only another manifestation of the spirit which led to the open hostility of Germany which forced us into war. For a time we were at a great disadvantage in meeting the situation. We had no secret police; we had no laws adequate to deal with these novel offenses.