Rex Dillot was nearly twenty-four, almost good-looking and quite penniless. His mother was supposed to make him some sort of an allowance out of what her creditors allowed her, and Rex occasionally strayed into the ranks of those who earn fitful salaries as secretaries or companions to people who are unable to cope unaided with their correspondence or their leisure. For a few months he had been assistant editor and business manager of a paper devoted to fancy mice, but the devotion had been all on one side, and the paper disappeared with a certain abruptness from club reading-rooms and other haunts where it had made a gratuitous appearance. Still, Rex lived with some air of comfort and well-being, as one can live if one is born with a genius for that sort of thing, and a kindly Providence usually arranged that his week-end invitations coincided with the dates on which his one white dinner-waistcoat was in a laundry-returned condition of dazzling cleanness. He played most games badly, and was shrewd enough to recognise the fact, but he had developed a marvellously accurate judgement in estimating the play and chances of other people, whether in a golf match, billiard handicap, or croquet tournament. By dint of parading his opinion of such and such a player's superiority with a sufficient degree of youthful assertiveness he usually succeeded in provoking a wager at liberal odds, and he looked to his week- end winnings to carry him through the financial embarrassments of his mid- week existence. The trouble was, as he confided to Clovis Sangrail, that he never had enough available or even prospective cash at his command to enable him to fix the wager at a figure really worth winning.