The policemen crowded forward. What Marsh had found was apparent at once. On the light background of the rug was a large, dark spot which the chair had covered. The plain-clothes man stooped and placed his hand on the spot. It felt damp to the touch, and as he stood erect again, holding his hand under the light, they all saw that the fingers were covered with a thin film of red.
"Blood!" cried Murphy.
"Yep," affirmed the plain-clothes man. "Fresh blood!"
Excited exclamations from the others showed their appreciation of the discovery.
Marsh smiled.
"I guess that looks like a possible murder," he said.
"The chair was placed there to cover the spot, all right," now admitted the plain-clothes man.
"But what became of the body?" again questioned Murphy.
"As I said before," Marsh answered him, "that is for you to find out. It is not my business."
"SOME mystery!" exclaimed the plain-clothes man. "This is a job for Dave Morgan."