"No, it was not in the morning, now you mention it. It was in the evening. He left again the following morning by the northern train."
"How did he find my address?" asked Frank.
"Obviously from the visitors' list. The waiter on duty in the writing room remembered having seen him consulting the newspaper. Now, my boy, you have to be perfectly candid with me. What do you know about Rex Holland?"
Frank opened his case, took out a cigarette, and lit it before he replied.
"I know what everybody knows about him," he said, with a hint of bitterness in his voice, "and something which nobody knows but me."
"But, my dear fellow," said Saul Arthur Mann, laying his hand on the other's shoulder, "surely you realize how important it is for you that you should tell me all you know."
Frank shook his head.
"The time is not come," he said, and he would make no further statement.
But on another matter he was emphatic.