For a minute, no-one spoke. Gentleman still worried the cards, and we sat and watched him. Mr Ibbs watched him hardest of all: his eye grew narrow, and he tilted his head—he might have been lining him up along the barrel of a gun.

''So, my son,'' he said. ''What''s the story?''

Gentleman looked up.

''The story,'' he said. ''The story is this.'' He took out a card, and laid it, face-up, on the table. It was the King of Diamonds. ''Imagine a man,'' he said, as he did it. ''An old man—a wise man, in his own way—a gentleman scholar, in fact; but with curious habits. He lives in a certain out-of-the-way sort of house, near a certain out-of-the-way kind of village, some miles from London—never mind quite where, just now. He has a great room filled with books and prints, and cares for nothing but for them and for a work he is compiling— let''s call it, a dictionary. It is a dictionary of all his books; but he has hopes for the pictures, too—has taken a mind to having them bound in fancy albums. The handling of that, however, is more than he can manage. He places a notice in a newspaper: he needs the services of—here he put down another card, next to the first: Jack of Spades—''a smart young man, to help him mount the collection; and one particular smart young man—being at that time rather too well known at the London gaming-houses, and highly desirous of a little light out-of-the-way sort of employment, bed and board provided—replies to the advertisement, is examined, and found fit.''