"No one's an idea what we're doing."

"We routed those Fifth-Formers!"

"Cheek of them to come prying here!"

"They went away no wiser, though!"

"We must hide these costumes."

The spectators above absolutely gurgled with joy, but they were careful not to betray their presence. Making a sign to the others, Mona motioned them to withdraw their heads.

"We've seen enough!" she whispered. "They might look up at any moment. Better beat a retreat now."

Four very satisfied girls climbed back over the ridge of the roof. They had gained exactly the information they wanted, and they meant to act upon it. They considered their action was a benefit to their Form.

"We've done it so quickly," said Mona, who was leading the way, "we shall have time to scoot downstairs, and be just innocently loitering about the playground before the Sixth have finished. They'll never guess!—Oh, I say, here's a go!"

"What's the matter?"