"Come up another flight, please," said Dr. Fox. "We will begin our examination there."

They went up to the next story.

Dr. Fox drew a bunch of keys from his pocket, and applying one to the door opened it.

"Do you keep them locked in?" asked Mrs. Kenyon, surprised.

"This is one of the dormitories," answered the doctor, who never lost his self-possession. "Come in, please."

It was a large square room. In one corner was a bed, surrounded by curtains. In the opposite corner was another bed—a cot.

"Sit down one moment, Mrs. Kenyon," said the doctor. "I want to call a servant."

He left the room, and Mr. Kenyon followed him.

The two men regarded each other with a complacent smile.

"Well, it's done," said the doctor, rubbing his hands. "She walked into the trap without any suspicion or fuss."