"What was it?" queried Tom, while the others came running to the spot.
"Something hit me on the ear!"
"Anybody in there?"
"There must be."
"Come out of that, whoever you are!" yelled Fred, while Dick pointed his shotgun at the door.
There was no answer, but a second later came the whirring again, and then a big bat flew into the light, just grazing Tom's face.
"A bat!"
"Let it go!" said Songbird, and then the bat flew out of a window and disappeared.
"Oh!" murmured Sam, and breathed a sigh of relief. "I—I thought somebody struck at me!"
"I've got one of those electric pocket lights along," said Tom. "Let me use that."