The man was awaiting the service of his dinner in the magnificent buffet of the Gare de Lyon. He sat at a table laid for three, on the right-hand side of the entrance and close to the window. From below came the turmoil of the trains. In appearance he was of somewhat less than medium height, of unathletic, almost frail, physique. His head was thrust a little forward, as though he were afflicted with a chronic stoop. He wore steel-rimmed spectacles with the air of one who has taken to them too late in life to have escaped the constant habit of peering, which had given to his neck an almost storklike appearance.