"He's tougher than that, Dick!"

But he looked ruefully at the spy.

"I wish I knew what to do with him," he said. "He'll come to in a
little while. But --"

"We can get away while he's still out," said Dick, quickly. "He
can't follow us and we can get such a start with our motorcycles."

"Yes, but he'll know their game is up," said Harry. "Don't you
see, Dick? He'll tell them they're suspected -- and that's all
they'll need in the way of warning. When men are doing anything
as desperate as the sort of work they're up to in that house, they
take no more chances than they have to. They'd be off at once,
and start up somewhere else. We only stumbled on this by mere
accident -- they might be able to work for weeks if they were
warned."

"Oh, I never thought of that! What are we to do, then?'

"I wish I knew whether anyone saw us from the house or if they
didn't - ! Well, we'll have to risk that. Dick, do you see that
house over there? It's all boarded up -- it must be empty."

"Yes, I see it." Dick caught Harry's idea at once this time, and
began measuring with his eye the distance to the little house of
which Harry had spoken. "It's all down hill -- I think we could
manage it all right."