"It was fairly obvious," said the other.

"Perhaps the doctor's in it too," suggested Tuppence.

Julius shook his head.

"I don't think so. I took to him at once. No, I'm pretty sure
Dr. Hall's all right."

"Hall, did you say?" asked Sir James. "That is curious--really
very curious."

"Why?" demanded Tuppence.

"Because I happened to meet him this morning. I've known him
slightly on and off for some years, and this morning I ran across
him in the street. Staying at the Metropole, he told me." He
turned to Julius. "Didn't he tell you he was coming up to town?"

Julius shook his head.

"Curious," mused Sir James. "You did not mention his name this
afternoon, or I would have suggested your going to him for
further information with my card as introduction."

"I guess I'm a mutt," said Julius with unusual humility. "I ought
to have thought of the false name stunt."

"How could you think of anything after falling out of that tree?"