"But it was all over," said the general. "What could he have been waiting for?"

"He was waiting for the duel," said Father Brown.

"But I tell you I saw the duel!" cried the general.

"And I tell you you didn't see the duel," said the priest.

"Are you mad?" demanded the other. "Or why should you think I am blind?"

"Because you were blinded—that you might not see," said the priest. "Because you are a good man and God had mercy on your innocence, and he turned your face away from that unnatural strife. He set a wall of sand and silence between you and what really happened on that horrible red shore, abandoned to the raging spirits of Judas and of Cain."

"Tell us what happened!" gasped the lady impatiently.

"I will tell it as I found it," proceeded the priest. "The next thing I found was that Romaine the actor had been training Maurice Mair in all the tricks of the trade of acting. I once had a friend who went in for acting. He gave me a very amusing account of how his first week's training consisted entirely of falling down; of learning how to fall flat without a stagger, as if he were stone dead."

"God have mercy on us!" cried the general, and gripped the arms of his chair as if to rise.

"Amen," said Father Brown. "You told me how quickly it seemed to come; in fact, Maurice fell before the bullet flew, and lay perfectly still, waiting. And his wicked friend and teacher stood also in the background, waiting."