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.
"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?"
"A very small thing," said Oman; "but it kept me restless in church till I came back to see that all was well. That book on his table was a work on poisons; and was put down open at the place where it stated that a certain Indian poison, though deadly and difficult to trace, was particularly easily reversible by the use of the commonest emetics.
I suppose he read that at the last moment--"
"And remembered that there were emetics in the cruet-stand," said Father Brown. "Exactly. He threw the cruet in the dustbin-- where I found it, along with other silver--for the sake of a burglary blind. But if you look at that pepper-pot I put on the table, you'll see a small hole. That's where Cray's bullet struck, shaking up the pepper and making the criminal sneeze."
There was a silence. Then Dr Oman said grimly: "The Major is a long time looking for the police."
"Or the police in looking for the Major?" said the priest.
"Well, good-bye."
