“Never!” gasped Nell.

“Yes, it is. I am sure,” agreed Laura.

“Oh, dear! if she catches us here we’ll have to tell where we have been and all about it,” groaned Eve.

“And demerits to work off to-morrow,” moaned Bobby.

“Back into the stairway and keep still,” whispered Laura.

They all crowded back. Miss Carrington came along the gloomy corridor and entered a classroom. She did not turn the corner.

“Good! Now let’s creep down and make our escape,” whispered Bobby.

“But not by the front door. She came in that way.”

“But the other doors will be locked—both the boys’ and ours,” urged Jess.

“I know the way out through the basement,” spoke Bobby, with determination. “I can open John’s door. Come on.”