Mr. King walked excitedly away in the direction of the Marvin hangar. The two friends remained on the bench pile discussing the case in its various bearings.

Then Dave gave Hiram an inkling that Grimshaw had him in active training for some reason soon to develop.

“I hope I’m going to get a chance to do something worth while in the aero line, Hiram,” he said. “How I used to dream about all this when I was back at Brookville.”

“Was that where you lived, Dave?”

“Yes.” And one confidence led to another, and Dave found an interested listener to the details of his past life.

“Well, you’ve had quite an experience, haven’t you, Dave?” said Hiram. “That old guardian of yours is a mean one, and no mistake.”

“I’m glad to be away from him,” said Dave.

“Hello!” interrupted Hiram.

He jumped down from the bench pile, as he noticed a slouching figure moving stealthily away from the other side of it.

“Dave,” exclaimed Hiram, “do you know I believe that fellow has been listening to every word we said.”