"If I ring the bell I'll have to explain matters," he said to himself. "I'll see if I can't rouse up some of the fellows."

He walked around to the window of No. 11, and threw several handsful of gravel up against the glass. At first there was no response, but presently the window was raised, and Roger's head appeared.

"Is that you, Dave?" asked the senator's son, in a low voice.

"Yes, Roger. Will you slip down and let me in."

"Sure thing. Will the side door do?"

"Yes."

No more was said, and the window was closed. Dave hurried to the door mentioned, and a moment later Roger opened it, and he entered. Then both hurried upstairs, making as little noise as possible.

"What kept you so long?" asked the senator's son, while Dave was undressing.

"I'll tell you and Phil in the morning," was Dave's reply. "I've got a yarn to spin you will hardly believe." And then he went to bed. But it was a long time before he was able to drop asleep, and then his dreams were little short of a nightmare.

It was not until Sunday afternoon that Dave got a chance to tell his two chums the particulars of what had occurred. They listened with keen attention to all he said, and the face of each plainly expressed his amazement.