“When I came upstairs to-night, I noticed that the tower door was ajar. So I watched from my own room. Stokes sneaked up into the tower. He came down after a while — “

“He was tapping up there! That’s the noise I heard. Trying to attract my attention.”

“I heard nothing in my room; but Stokes went up again, and came down immediately. Five minutes went by; then he did it again — “

“Getting me interested,” interposed Harry. “What a sucker I was!”

“I watched you come out of your room,” said Marquette. “I waited a minute or two, thinking that Stokes might be observing you. Then I realized his plan. There was no time to lose. I followed you up to the tower.”

“But, why did you land on me so suddenly? Couldn’t you have spoken to me?”

“It would have been too late,” replied Marquette solemnly.

“Too late?”

“Yes. Within a few seconds you would have died as Stokes had planned.”

“How?”