“I was wondering if you were going to take notice of those marks and follow them.”
Nick Carter dryly said:
“I saw them some time ago, in fact the very instant I stepped into this room. I did not care at the moment to trace them, as I had something else in my mind.”
“I suppose that in your business, as in most others, each man has his own way of working.”
“Certainly.”
The door was by this time reached. It was closed. The detective opened it and saw that the marks were continued across the sill and upon the carpet of the hall.
The hall being dark, he said to Barnes:
“Will you be kind enough to open that window at the end?”
“Assuredly.”
Barnes proceeded to open it, letting in a flood of light.