"Our little difference of last evening," he said suavely, "will, I hope, evaporate in this atmosphere of unexpected sorrow. If I was in the wrong I deeply regret it. My one wish now is to join you in being of use to Bobby and Miss Katherine in their bereavement. I saw the account in a paper at luncheon. I came as quickly as possible."

Graham answered this smooth effrontery with a blunt question.

"Do you know that Bobby is in very real trouble, that he may be implicated in Mr. Blackburn's death?"

Paredes flung up his hands, but Bobby, looking for emotion in the sallow face then, found none. Paredes's features, it occurred to him, were exactly like a mask.

Bobby checked himself. In his unhealthy way Paredes had been a good friend. The man's voice flowed smoothly, demanding particulars.

"But this," he said, when they had told him what they could, "changes the situation. I must stay here. I must watch that detective and learn what he has up his sleeve."

Graham turned away.

"I've tried. Maybe you'll succeed better than I."

"Then you'll excuse me," Paredes said quickly. "I should like your permission to telephone to my hotel in New York for some clothing. I want to see this through."

The three looked at each other. Katherine and Graham seemed about to speak. Bobby wouldn't let them.