The amateur photograph showed not only the unfortunate clergyman falling headforemost toward the sidewalk, but above him the forms of two men at the window.

They were not looking out, but rather in the act of dodging back.

These two were outlined very dimly, but the picture was clear enough to show that there were two of them, and that their arms were half-raised, as would be natural if they had just thrown a body away from them.

Unluckily, the faces were not at all distinct.

Try as he would, and Nick used his magnifying glass, he could not make them out to his satisfaction.

While he was still studying it, there came a knock at the door, and Patsy hurried in.

“The clerk told me you were here?” he said. “Well?”

“It’s a good piece of evidence,” responded Nick; “if only this young man had had a little more luck! We could get along without the picture of Judson if we only had a clean-cut picture of the two murderers.”

“That’s all right,” said Patsy, confidently, “I know who they are.”