"But Mrs. Jones says nobody has been in the school, didn't you, Mrs. Jones?"
"Yes, miss, no one but myself—except—yes, I do remember, one of the teachers came and asked if she might fetch a book she'd forgotten, and I let her go in."
"Which teacher was it?"
"That foreign lady."
"Madame Bertier?"
"I don't know her name. She wasn't there more than a few minutes."
"Oh!" said Lorraine thoughtfully. "Thank you, Mrs. Jones!"
Uncle Barton also looked thoughtful, when Lorraine described to him the whole occurrence. He wrote a note at once to the Chief Constable, to tell him where the telephone wires were cut, and sent the office boy to deliver it. Then he asked for any details his niece could supply.
"You're a little brick!" he commented. "There's treachery at work somewhere, undoubtedly, but the question is how to lay our hands on it. Can I trust you and the Castletons just to keep this dark for the present? I'd rather it wasn't noised all about the place. I've my own ideas, and I want to work them out in my own way."
"Shall I say anything about it to Madame Bertier?" asked Lorraine.