The millionaire arose slowly, and went to the private telephone room. He displayed no enthusiasm whatever. Even when he answered the phone, in a place free from observation, he acted in a most disinterested manner.
“This is Burbank,” came a voice over the wire. “Shall I talk to you now?”
“Everything all right at your end?”
“Yes, sir.”
“Go ahead then.”
“I have been watching Volovick — “
“Never mind the name, Burbank.”
“All right, sir. I have been watching the man. I have talked with him. I have learned nothing of importance except one very small detail.”
“Which is — “
“When he opened his wallet to take out some money, he pulled out a yellow card. It was a blank card; I saw both sides of it. But he put it away so quickly that I thought it might have some significance.”