This man was a young social aristocrat, whom, for purposes of anonymity, I have chosen to call Philo Vance.

Vance had many amazing gifts and capabilities. He was an art collector in a small way, a fine amateur pianist, and a profound student of aesthetics and psychology. Although an American, he had largely been educated in Europe, and still retained a slight English accent and intonation. He had a liberal independent income, and spent considerable time fulfilling the social obligations which devolved on him as a result of family connections; but he was neither an idler nor a dilettante. His manner was cynical and aloof; and those who met him only casually, set him down as a snob. But knowing Vance, as I did, intimately, I was able to glimpse the real man beneath the surface indications; and I knew that his cynicism and aloofness, far from being a pose, sprang instinctively from a nature which was at once sensitive and solitary.

Vance was not yet thirty-five, and, in a cold, sculptural fashion, was impressively good-looking. His face was slender and mobile; but there was a stern, sardonic expression to his features, which acted as a barrier between him and his fellows. He was not emotionless, but his emotions were, in the main, intellectual. He was often criticised for his asceticism, yet I have seen him exhibit rare bursts of enthusiasm over an aesthetic or psychological problem. However, he gave the impression of remaining remote from all mundane matters; and, in truth, he looked upon life like a dispassionate and impersonal spectator at a play, secretly amused and debonairly cynical at the meaningless futility of it all. Withal, he had a mind avid for knowledge, and few details of the human comedy that came within his sphere of vision escaped him.

It was as a direct result of this intellectual inquisitiveness that he became actively, though unofficially, interested in Markham’s criminal investigations.

I kept a fairly complete record of the cases in which Vance participated as a kind of amicus curiae[8], little thinking that I would ever be privileged to make them public; but Markham, after being defeated, as you remember, on a hopelessly split ticket at the next election, withdrew from politics; and last year Vance went abroad to live, declaring he would never return to America. As a result, I obtained permission from both of them to publish my notes in full. Vance stipulated only that I should not reveal his name; but otherwise no restrictions were placed upon me.

I have related elsewhere[9] the peculiar circumstances which led to Vance’s participation in criminal research, and how, in the face of almost insuperable contradictory evidence, he solved the mysterious shooting of Alvin Benson. The present chronicle deals with his solution of Margaret Odell’s murder, which took place in the early fall of the same year, and which, you will recall, created an even greater sensation than its predecessor.[10]

A curious set of circumstances was accountable for the way in which Vance was shouldered with this new investigation. Markham for weeks had been badgered by the anti-administration newspapers for the signal failures of his office in obtaining convictions against certain underworld offenders whom the police had turned over to him for prosecution. As a result of prohibition a new and dangerous, and wholly undesirable, kind of night life had sprung up in New York. A large number of well-financed cabarets, calling themselves night clubs, had made their appearance along Broadway and in its side streets; and already there had been an appalling number of serious crimes, both passional and monetary, which, it was said, had had their inception in these unsavory resorts.