Steve Triumphantly Held Up a Saw.

"Shall we say who did it?"

"We can't really say. We may have our suspicions, but unless we get more evidence we shall have to let it go as it is. I have some facts in my possession that may help us, though."

Steve got down on his hands and knees and began going over the floor with great thoroughness. He was keen and alert and his eyes glowed with resolute purpose.

"Here's one of the broken pieces," cried Bob.

"Good. See if you can find the other. We shall have our case complete in a few minutes if we keep on having such good luck."