aid briefly: "The
head and shoulders were cut about in a queer way. It seemed to be done
after death."

"Yes," said the motionless priest, "it was done so as to make you assume
exactly the one simple falsehood that you did assume. It was done to
make you take for granted that the head belonged to the body."

The borderland of the brain, where all the monsters are made, moved
horribly in the Gaelic O'Brien. He felt the chaotic presence of all
the horse-men and fish-women that man's unnatural fancy has begotten. A
voice older than his first fathers seemed saying in his ear: "Keep out
of the monstrous garden where grows the tree with double fruit. Avoid
the evil garden where died the man with two heads." Yet, while these
shameful symbolic shapes passed across the ancient mirror of his Irish
soul, his Frenchified intellect was quite alert, and was watching the
odd priest as closely and incredulously as all the rest.

Father Brown had turned round at last, and stood against the window,
with his face in dense shadow; but even in that shadow they could see
it was pale as ashes. Nevertheless, he spoke quite sensibly, as if there
were no Gaelic souls on earth.

"Gentlemen," he said, "you did not find the strange body of Becker in
the garden. You did not find any strange body in the garden. In face
of Dr. Simon's rationalism, I still affirm that Becker was only partly
present. Look here!" (pointing to the black bulk of the mysterious
corpse) "you never saw that man in your lives. Did you ever see this
man?"

He rapidly rolled away the bald, yellow head of the unknown, and put in
its place the white-maned head beside it. And there, complete, unified,
unmistakable, lay Julius K. Brayne.

"The murderer," went on Brown quietly, "hacked off his enemy's head and
flung the sword far over the wall. But he was too clever to fling the
sword only. He flung the head over the wall also. Then he had only to
clap on another head to the corpse, and (as he insisted on a private
inquest) you all imagined a totally new man."

"Clap on another head!" said O'Brien staring. "What other head? Heads
don't grow on garden bushes, do they?"

"No," said Father Brown huskily, and looking at his boots; "there
is only one place where they grow. They grow in the basket of the
guillotine, beside which the chief of police, Aristide Valentin, was
standing not an hour before the murder. Oh, my friends, hear me a minute
more before you tear me in pieces. V