“Oh, there are sermons in a cruet-stand, too,” said Father Brown, quite gravely. “Have you heard of faith like a grain of mustard-seed; or charity that anoints with oil? And as for vinegar, can any soldiers forget that solitary soldier, who, when the sun was darkened—”

Colonel Cray leaned forward a little and clutched the tablecloth.

Father Brown, who was making the salad, tipped two spoonfuls of the mustard into the tumbler of water beside him; stood up and said in a new, loud and sudden voice—“Drink that!”

At the same moment the motionless doctor in the garden came running, and bursting open a window cried: “Am I wanted? Has he been poisoned?”

“Pretty near,” said Brown, with the shadow of a smile; for the emetic had very suddenly taken effect. And Cray lay in a deck-chair, gasping as for life, but alive.

Major Putnam had sprung up, his purple face mottled. “A crime!” he cried hoarsely. “I will go for the police!”

The priest could hear him dragging down his palm-leaf hat from the peg and tumbling out of the front door; he heard the garden gate slam. But he only stood looking at Cray; and after a silence said quietly:

“I shall not talk to you much; but I will tell you what you want to know. There is no curse on you. The Temple of the Monkey was either a coincidence or a part of the trick; the trick was the trick of a white man. There is only one weapon that will bring blood with that mere feathery touch: a razor held by a white man. There is one way of making a common room full of invisible, overpowering poison: turning on the gas—the crime of a white man. And there is only one kind of club that can be thrown out of a window, turn in mid-air and come back to the window next to it: the Australian boomerang. You’ll see some of them in the Major’s study.”

With that he went outside and spoke for a moment to the doctor. The moment after, Audrey Watson came rushing into the house and fell on her knees beside Cray’s chair. He could not hear what they said to each other; but their faces moved with amazement, not unhappiness. The doctor and the priest walked slowly towards the garden gate.

“I suppose the Major was in love with her, too,” he said with a sigh; and when the other nodded, observed: “You were very generous, doctor. You did a fine thing. But what made you suspect?”