It happened at a dinner-party given by the Cravisters. Dr. Cravister was the Headmaster of Æsop--a good, gentle, learned old man, with snow-white hair and a saintly face which the spirit of comic irony had embellished with a nose that might, so red and bulbous it was, have been borrowed from the properties of a music-hall funny man. And then there was Mrs. Cravister, large and stately as a galleon with all sails set. Those who met her for the first time might be awed by the dignity of what an Elizabethan would have called her "swelling port." But those who knew her well went in terror of the fantastic spirit which lurked behind the outward majesty. They were afraid of what that richly modulated voice of hers might utter. It was not merely that she was malicious--and she had a gift of ever-ready irony; no, what was alarming in all her conversation was the element of the unexpected. With most people one feels comfortably secure that they will always say the obvious and ordinary things; with Mrs. Cravister, never. The best one could do was to be on guard and to try and look, when she made a more than usually characteristic remark, less of a bewildered fool than one felt. Mrs. Cravister received her guests--they were all of them boys--with stately courtesy. They found it pleasant to be taken so seriously, to be treated as perfectly grown men; but at the same time, they always had with Mrs. Cravister a faint uncomfortable suspicion that all her politeness was an irony so exquisite as to be practically undistinguishable from ingenuousness. "Good evening, Mr. Gay," she said, holding out her hand and shutting her eyes; it was one of her disconcerting habits, this shutting of the eyes. "What a pleasure it will be to hear you talking to us again about eschatology." Gay, who had never talked about eschatology and did not know the meaning of the word, smiled a little dimly and made a protesting noise. "Eschatology? What a charming subject!" The fluty voice belonged to Henry Cravister, the Headmaster's son, a man of about forty who worked in the British Museum. He was almost too cultured, too erudite. "But I don't know anything about it," said Gay desperately. "Spare us your modesty," Henry Cravister protested. His mother shook hands with the other guests, putting some at their ease with a charming phrase and embarrassing others by saying something baffling and unexpected that would have dismayed even the hardiest diner-out, much more a schoolboy tremblingly on his good behaviour. At the tail end of the group of boys stood Dick and Francis Quarles. Mrs. Cravister slowly raised her heavy waxen eyelids and regarded them a moment in silence.