“Oh, quite,” agreed Vance. “And yet, it’s a distressin’ thing for a lawyer not to have footprints of some kind, isn’t it, old dear? It leaves one so up in the air.”

Suddenly Markham swung round. “You, of course, don’t need footprints, or any other kind of material clues,” he flung at Vance tauntingly. “You have powers of divination such as are denied ordinary mortals. If I remember correctly, you informed me, somewhat grandiloquently, that, knowing the nature and conditions of a crime, you could lead me infallibly to the culprit, whether he left footprints or not. You recall that boast? . . . Well, here’s a crime, and the perpetrator left no footprints coming or going. Be so good as to end my suspense by confiding in me who killed the Odell girl.”

Vance’s serenity was not ruffled by Markham’s ill-humored challenge. He sat smoking lazily for several minutes; then he leaned over and flicked his cigarette ash out of the window.

“ ’Pon my word, Markham,” he rejoined evenly, “I’m half inclined to look into this silly murder. I think I’ll wait, though, and see whom the nonplussed Heath turns up with his inquiries.”

Markham grunted scoffingly, and sank back on the cushions.

“Your generosity wrings me,” he said.

CHAPTER IX.
The Pack in Full Cry

(Tuesday, September 11; afternoon)

On our way down-town that morning we were delayed for a considerable time in the traffic congestion just north of Madison Square, and Markham anxiously looked at his watch.

“It’s past noon,” he said. “I think I’ll stop at the club and have a bite of lunch. . . . I presume that eating at this early hour would be too plebeian for so exquisite a hothouse flower as you.”