Just then the sound came again. But Bunny happened to be watching, and he saw a door swinging in the wind. It was the old door, slamming, that had made the banging noise.
“That’s what it was,” and Bunny pointed. “Just a door.”
“Oh,” murmured Sue, and then she had an idea. “Oh, Bunny,” she exclaimed, “maybe if we went in the door—in the factory you know—we could get out on the other side to a street and go home that way.”
“Maybe,” agreed Bunny. He was pretty sure they would never get home by wandering in the alley that led around and around. “All right, Sue,” said her brother. “We’ll go in the factory. I’d like to see what’s in it, anyhow.”
Still hand in hand the two children passed through the wind-swayed door. It was a heavy one and the bottom hinge seemed to be broken, for the door was tilted.
Once inside the children found the place gloomy at first, but they walked on. They were in a large room, which did not seem to have any other doors or windows in it. But there was a flight of stairs.
“I guess we have to go up those,” said Bunny. “Then we can get out. Don’t be afraid, Sue.”
“Oh, I’m not afraid now,” said Sue bravely.
Up the stairs went the children. What would they find at the top?