"Shall you need to see me again?"

"Give me your name and address and I will communicate with you if necessary."

"My name is Mark Mason, and I am staying at the International Hotel."

"If convenient, come here in about two hours."

"All right, sir."

Two hours later Mark returned to the police station.

"Oh, here you are!" said the sergeant with a friendly nod. "Well, I have heard from New York."

"Have you, sir?" asked Mark eagerly. "From Inspector Byrnes?"

"Yes."

"What does he say?"