"That corner of the factory which is still standing. Look at those men coming out and running away!"
Ned pointed, and his chum, leaning over from the steering wheel and controls, gave a start of surprise as he saw three figures clambering down over the broken debris and making their way out of what had once been a doorway.
"Did they come out of the factory, Ned?"
"They surely did! And unless I miss my guess they were in it, or around it, when we went through like a fellow carrying the football over the line for a touchdown."
"In there when the tank broke open things?"
"I think so. I didn't see them before, but they certainly ran out as we started away."
"This has got to be looked into!" decided Tom. "Come on, Ned! It may be more of that spy business!"
Tom Swift stopped the tank and prepared to get out.