The operatives who were listening to this partially reported conversation in the janitor’s room did not wait even a minute. They broke down the door and arrested Mr. L——. He was turned over to the United States Secret Service and arraigned before the Assistant District Attorney. His activities as an employer of espionage agents thereupon ceased abruptly. He was a cheap and dirty imposter. It was found in hundreds of cases—and the knowledge was invariably suppressed—that an alien suspect’s sudden and mysterious shifts and changes, his suspicious and watchful conduct, his evasive acts, all had to do with nothing more than the fact that the man had a mistress or so in another part of the city. The woman in his case very often was not the woman in the case at all, for there was no case, so far as the League was concerned. But countless men were quietly warned. Often with tears they implored the secrecy which was given them. There are hundreds, perhaps thousands, of men in America whose private lives are known to the League and not known in their own families. There is yet to be known the first case where any advantage ever was taken of the unintended victim caught in the general meshes of the Web; but it may be interesting for any of those of guilty conscience who by chance may read these lines, to know that their lives are filed away, cross-indexed, for future reference in the vast archives of the Department of Justice at Washington! The extent of these “woman cases,” as they were known, is very considerable, and the per cent of suspect spy cases which simmered down to a petticoat basis is a very large one. A great part of the work of the League was done in finding the woman, if not in searching for her specifically. The League brought up from the deep-sea soundings of its steel meshes all the sordid and unworthy phases of human life on the part of both men and women. But while combing out the discards of human intrigue, the League often found the evidence it really sought. This was without fail used mercilessly and coldly.