About one o’clock they moved to Maxim’s, and two found them in Deviniere’s. Sloane had been drinking consecutively and was in a state of unsteady exhilaration, but Amory was quite tiresomely sober; they had run across none of those ancient, corrupt buyers of champagne who usually assisted their New York parties. They were just through dancing and were making their way back to their chairs when Amory became aware that some one at a near-by table was looking at him. He turned and glanced casually... a middle-aged man dressed in a brown sack suit, it was, sitting a little apart at a table by himself and watching their party intently. At Amory’s glance he smiled faintly. Amory turned to Fred, who was just sitting down.
“Who’s that pale fool watching us?” he complained indignantly.

This side of Paradise