Jack did not argue the matter with himself. He had no compunctions. He jumped straight for the to him (as perhaps to anyone) tangible certainty that he had struck a trail of iniquity. But how to follow it? His ruminations were cut short by the loud honk of an automobile and there, returning to Fifth Avenue at Fiftieth Street, he saw the yellow limousine which contained the suspects wheeling into the procession and, forced by the unrelieved pressure to relax its impatience, moving with the limping concourse at the same pace.

Jack watched it eagerly. His eyes never left it. It swayed a little to the right and to the left as the driver, probably under threats or persuasion, endeavored to insert his vehicle into the chance spaces that opened before him. This irregular and tentative progress brought the automobile at length directly alongside of the ’bus which had on it the Nemesis of its (the automobile’s) occupants. It was underneath Jack’s very eyes; he could have dropped on its roof almost unnoticed. Jack’s heart beat with trip-hammer throbs, and his mind rehearsed the possibilities of murder, arson, burglary, brigandage, kidnapping, etc., gathering headway in that uncanny conference going on there below under that burnished but impenetrable roof. But he was exulting too with the steel-clad certainty of having a “case,” and that a little intensive use of his wits would promote him from the office floor to a reserved seat in the Reporters’ Sanctum.

A jolt, a lurching swing, the vituperative shriek of an ungreased axle, and the ’bus followed a meandering lane that brought it into an unimpeded headway. Jack sprang to his feet and watched behind him the still imprisoned limousine—it too shot ahead; noiselessly as a speeding bird it overtook the ’bus and then with a graceful curve, almost as if in mockery of his impotence, it vanished into east Fifty-eighth Street.

Jack had a message for the Director of the Metropolitan Art Museum. It was from myself in response to an inquiry as to what space we could afford for a description of a new Morgan exhibit. Jack was a safe messenger, unmistakably accurate, but we always discounted his celerity, because of his preferences for a ride on a Fifth avenue ’bus and the little delinquencies of delay his observational powers tempted him to perpetrate. He was an hour later than the most generous allowance of time would justify. Jack was to bring back “copy” for the next day’s issue. I lectured him. He was sullenly respectful, indifferently contrite, and showed a taciturn preoccupation that impressed my reportorial instinct as significant.

As a matter of fact the missing hour was used in traversing Fifty-eighth Street. The fruit of Jack’s search was diminutive but it was conclusive. On the pavement in front of No. — east Fifty-eighth Street, Jack picked up a microscopic green glass star. He knew where it belonged—the spangled turban on top of the massed hair of that afternoon’s debutante; debutante to Jack’s official criticism.

This minute betrayal had dropped from her hat, from nowhere else, and the belligerent cane of her escort had dislodged it. It had lain somewhere in the folds and creases of the soft velvet, to fall just there, unsuspectedly at the entrance of her retreat—a frail enamel bead releasing to the world a marvelous secret. For Jack Riddles intended to watch that house; he would enter it; if it concealed some half consummated plot of SIN, if indeed the plot was over, its victims disposed of, and the conspirators were there enjoying the harvest of their guilt, he would know it, and—the eventuality of failure never entered his head. He felt, in every fibre, a certainty of wrong-doing, something shadowy, perhaps darkly cruel in these people. His prescience was involuntary; he never explained it, he never himself understood it.

Jack lived in Brooklyn, with his wifeless father. That night as he left the office he dropped a postal at a lamp post and took a car north. He was following the trail. A little transposed I submit Jack’s story as he gave it to me the next morning.

He came to the office a little late, and knocked at my door. On entering I saw instantly that he was in an advanced stage of nervous excitement. He was pale, and a fluttering involuntary movement of his hands, one over the other, as he stood before me, with a glitter in his peculiarly shaped and small eyes betrayed his mental agitation. He was quite wet, had probably been drenched, and the first symptoms of a chill showed that precautions were necessary to avert a possible collapse. I told him to sit down, opened a cellarette, which had its professional and commercial uses, and poured out a rather stiff jorum of the best whisky I owned.

As he swallowed in a gulping manner the proffered contents of the glass, he was rather a ludicrous and yet pitiful and heart-moving object. His disordered hair, shabby clothes and a certain forlorn wistfulness in his glance upward to me, combined with his lean and disjointed anatomy gave him an expression that was at once tender and laughable. Only a Cruikshank could have done it justice. His spirits revived, animal heat reasserted itself, and back with it, as if it had stood somewhere aside until invited to return, came boastingly his invincible pugnacity and confidence.

“Mr. Link,” his speech was customarily hesitating with a deprecatory manner as if forestalling interruption or correction, and impeded by a slight stutter, but now, in the tide and torrent of his thoughts, under the sway of the elation over his first bit of detective work, it was rapid but coherent, and oddly picturesque. “Mr. Link, I’ve nipped a pretty piece of mischief in the bud—seems so to me. Of course I’m just on the trail, and fetching up to the big game that I think is in sight, barring the trees—may take more work than I think. But the proposition is as clear as glass that there’s a crooked game being pulled off at — east Fifty-eighth Street, and I’m convinced that ‘the deceits of the world, the flesh and the devil,’ as it goes in the prayer book, are behind it. Now here’s the evidence—not much you may say, but I’ll hang up my reputation on it—you know, Mr. Link, I have a little hereabouts at finding out things, and I’m just convinced it—won’t drop.