"So much for your condemned carelessness in not locking the door," he retorted with equal severity.

"Well, maybe you'd better see that it is fastened now."

Professor Darlington Ruggles turned the key in the lock, and then assumed a seat once more.

"Let me see. Where did we leave off?"

"In a mighty important place," answered the woman. "If that sneak had been at the door long, he must have heard something of our plans."

"And it makes you feel uneasy?"

"Don't it you?"

"A trifle. I can't imagine who the sneak was."

"Nor I."

"It might have been one of the boys playing a joke," said Ruggles.