Vance raised his eyebrows slightly.

“Why disparage my suggestion? Surely you must perceive that it has merit. A man without legal training, when he knows a thing to be true, ignores all incompetent testimony to the contr’ry, and clings to the facts. A court of law listens solemnly to a mass of worthless testimony, and renders a decision not on the facts but according to a complicated set of rules. The result, d’ ye see, is that a court often acquits a prisoner, realizing full well that he is guilty. Many a judge has said, in effect, to a culprit: ‘I know, and the jury knows, that you committed the crime, but in view of the legally admissible evidence, I declare you innocent. Go and sin again.’”

Markham grunted. “I’d hardly endear myself to the people of this county if I answered the current strictures against me by recommending law courses for the Police Department.”

“Permit me, then, to suggest the alternative of Shakespeare’s butcher: ‘Let’s kill all the lawyers.’”

“Unfortunately, it’s a situation, not a utopian theory, that has to be met.”

“And just how,” asked Vance lazily, “do you propose to reconcile the sensible conclusions of the police with what you touchingly call correctness of legal procedure?”

“To begin with,” Markham informed him, “I’ve decided henceforth to do my own investigating of all important night-club criminal cases. I called a conference of the heads of my departments yesterday, and from now on there’s going to be some real activity radiating direct from my office. I intend to produce the kind of evidence I need for convictions.”

Vance slowly took a cigarette from his case and tapped it on the arm of his chair.

“Ah! So you are going to substitute the conviction of the innocent for the acquittal of the guilty?”

Markham was nettled; turning in his chair he frowned at Vance.

“I won’t pretend not to understand your remark,” he said acidulously. “You’re back again on your favorite theme of the inadequacy of circumstantial evidence as compared with your psychological theories and aesthetic hypotheses.”

“Quite so,” agreed Vance carelessly. “Y’ know, Markham, your sweet and charmin’ faith in circumstantial evidence is positively disarming. Before it, the ordin’ry powers of ratiocination are benumbed. I tremble for the innocent victims you are about to gather into your legal net. You’ll eventually make the mere attendance at any cabaret a frightful hazard.”

Markham smoked a while in silence. Despite the seeming bitterness at times in the discussions of these two men, there was at bottom no animosity in their attitude toward each other. Their friendship was of long standing, and, despite the dissimilarity of their temperaments and the marked difference in their points of view, a profound mutual respect formed the basis of their intimate relationship.

At length Markham spoke.

“Why this sweeping deprecation of circumstantial evidence? I admit that at times it may be misleading; but it often forms powerful presumptive proof of guilt. Indeed, Vance, one of our greatest legal authorities has demonstrated that it is the most powerful actual evidence in existence. Direct evidence, in the very nature of crime, is almost always unavailable. If the courts had to depend on it, the great majority of criminals would still be at large.”

“I was under the impression that this precious majority had always enjoyed its untrammelled freedom.”

Markham ignored the interruption.

“Take this example: A dozen adults see an animal running across the snow, and testify that it was a chicken; whereas a child sees the same animal, and declares it was a duck. They thereupon examine the animal’s footprints and find them to be the web-footed tracks made by a duck. Is it not conclusive, then, that the animal was a duck and not a chicken, despite the preponderance of direct evidence?”