"Put it on him!" repeated Devine. "How the devil could they?"

"Let us go back," said Father Brown, "and look at the thing through another window—the window through which the young lady saw the ghost."

"The ghost!" repeated the other, with a slight start.

"She called it the ghost," said the little man, with composure, "and perhaps she was not so far wrong. It's quite true that she is what they call psychic. Her only mistake is in thinking that being psychic is being spiritual. Some animals are psychic; anyhow, she is a sensitive, and she was right when she felt that the face at the window had a sort of horrible halo of deathly things."

"You mean——" began Devine.

"I mean it was a dead man who looked in at the window," said Father Brown. "It was a dead man who crawled round more than one house, looking in at more than one window. Creepy, wasn't it? But in one way it was the reverse of a ghost; for it was not the antic of the soul freed from the body. It was the antic of the body freed from the soul."

He blinked again at the beehive and continued: "But, I suppose, the shortest explanation is to take it from the standpoint of the man who did it. You know the man who did it. John Bankes."

"The very last man I should have thought of," said Devine.

"The very first man I thought of," said Father Brown; "in so far as I had any right to think of anybody. My friend, there are no good or bad social types or trades. Any man can be a murderer like poor John; any man, even the same man, can be a saint like poor Michael. But if there is one type that tends at times to be more utterly godless than another, it is that rather brutal sort of business man. He has no social ideal, let alone religion; he has neither the gentleman's traditions nor the trade unionist's class loyalty. All his boasts about getting good bargains were practically boasts of having cheated people. His snubbing of his sister's poor little attempts at mysticism was detestable. Her mysticism was all nonsense; but he only hated spiritualism because it was spirituality. Anyhow, there's no doubt he was the villain of the piece; the only interest is in a rather original piece of villainy. It was really a new and unique motive for murder. It was the motive of using the corpse as a stage property—a sort of hideous doll or dummy. At the start he conceived a plan of killing Michael in the motor, merely to take him home and pretend to have killed him in the garden. But all sorts of fantastic finishing touches followed quite naturally from the primary fact; that he had at his disposal in a closed car at night the dead body of a recognized and recognizable burglar. He could leave his finger-prints and foot-prints; he could lean the familiar face against windows and take it away. You will notice that Moonshine ostensibly appeared and vanished while Bankes was ostensibly out of the room looking for the emerald necklace.

"Finally, he had only to tumble the corpse on to the lawn, fire a shot from each pistol, and there he was. It might never have been found out but for a guess about the two beards."