"Something was wrong then. The Shadow expected to be here; at least that's my opinion. But he didn't arrive."

"Maybe he won't be here to-night."

Harry Vincent did not reply.

"Suppose," added Bruce Duncan quizzically, "that we do not receive further instructions. What are we to do when the fifth man arrives? Follow him or warn him?"

"Follow him, of course."

"It would be better to warn him."

"Impossible," said Harry. "We couldn't do that in the dark. Remember, each of these men has come secretly to the meeting place. Another is due to-night. He will be suspicious of everything until he reaches his final destination. If we should step out of the darkness and speak to him, he would look upon us as enemies."

"We might wait for him here at the station."

"That would be better, but even then he would be suspicious. Most important of all, our orders are specific; we are to begin our watch before midnight. We can't be out by the old ruins and be here, too."

Bruce Duncan shrugged his shoulders. Somehow he doubted Vincent's faith in the wisdom of The Shadow. It was true that Bruce owed his life to the timely aid The Shadow had given that night at Isaac Coffran's. But the failure of a week ago had somewhat curbed Bruce's enthusiasm.