"You don't know?" echoed Naball, in surprise. "Do you mean to say that a large sum like that was placed to your credit by a person whom you don't know?"
"I do."
"And I can substantiate that statement," said Ezra quietly.
Naball looked from one to the other in perplexity, puzzled what to ask next. Then he felt the only thing to be done was to go away and think the matter over. But he did not intend to lose sight of Keith, and this absurd statement about the five hundred only seemed to strengthen his suspicions, so he determined to have him shadowed.
"Thank you, Mr. Stewart," he said quietly. "I have nothing more to ask. What time did you say you were going to meet a country train?"
"I mentioned no time," replied Keith sharply.
Baffled by this answer, Naball tried another way.
"Will you kindly give me your address?" he asked, pulling out his pocket-book. "I may want to communicate with you."
"Vance's boarding-house, Powlett Street, East Melbourne."
Mr. Naball noted this in his book, and then, with a slight nod, took his leave.