Cray slipped upstairs to change; Dr Oman and Miss Watson betook themselves solemnly down the street, with a string of other churchgoers; but Father Brown noticed that the doctor twice looked back and scrutinized the house; and even came back to the corner of the street to look at it again.

The priest looked puzzled. “He can’t have been at the dustbin,” he muttered. “Not in those clothes. Or was he there earlier today?”

Father Brown, touching other people, was as sensitive as a barometer; but today he seemed about as sensitive as a rhinoceros. By no social law, rigid or implied, could he be supposed to linger round the lunch of the Anglo-Indian friends; but he lingered, covering his position with torrents of amusing but quite needless conversation. He was the more puzzling because he did not seem to want any lunch. As one after another of the most exquisitely balanced kedgerees of curries, accompanied with their appropriate vintages, were laid before the other two, he only repeated that it was one of his fast-days, and munched a piece of bread and sipped and then left untasted a tumbler of cold water. His talk, however, was exuberant.

“I’ll tell you what I’ll do for you,” he cried—, “I’ll mix you a salad! I can’t eat it, but I’ll mix it like an angel! You’ve got a lettuce there.”

“Unfortunately it’s the only thing we have got,” answered the good-humoured Major. “You must remember that mustard, vinegar, oil and so on vanished with the cruet and the burglar.”

“I know,” replied Brown, rather vaguely. “That’s what I’ve always been afraid would happen. That’s why I always carry a cruet-stand about with me. I’m so fond of salads.”

And to the amazement of the two men he took a pepper-pot out of his waistcoat pocket and put it on the table.

“I wonder why the burglar wanted mustard, too,” he went on, taking a mustard-pot from another pocket. “A mustard plaster, I suppose. And vinegar”—and producing that condiment—“haven’t I heard something about vinegar and brown paper? As for oil, which I think I put in my left—”

His garrulity was an instant arrested; for lifting his eyes, he saw what no one else saw—the black figure of Dr Oman standing on the sunlit lawn and looking steadily into the room. Before he could quite recover himself Cray had cloven in.

“You’re an astounding card,” he said, staring. “I shall come and hear your sermons, if they’re as amusing as your manners.” His voice changed a little, and he leaned back in his chair.