Together the two left the house softly, and soon were hurrying toward
the aeroplane shed.

"Look!" exclaimed Mr. Jackson. "Didn't you see a light just then, Tom?"

"Where?"

"By the side window of the shed?"

"No, I didn't notice it! Oh, yes! There it is! Some one is in there! If
it's Andy Foger, I'll have him arrested, sure!"

"Maybe we can't catch him."

"That's so. Andy is a pretty slippery customer. Say, Mr. Jackson, you go
around and get Eradicate, and have him bring a club. We can't trust him
with a gun. Tell him to get at the back door, and I'll wait for you to
join me, and we'll go in the front door. Then we'll have 'em between two
fires. They can't get away."

"How about the windows?"

"They're high up, and hard to open since I put the new catches on them.
Whoever got in must have forced the lock of the door. There goes the
light again!"

As Tom spoke there was seen the faint glimmer of a light. It moved
slowly about the interior of the shed, and with a peculiar bobbing
motion, which indicated that some one was carrying it.