"Doubt!" she exclaimed, turning her wan, white face on him. "Doubt! How should I doubt? He has haunted me since that awful night--haunted me, almost driven me to my death. Oh, you know not! I have risen at night from my bed to see him standing there, muttering, grimacing over that very spot, so that, as I gazed on him from out the darkness of my room, I have swooned again as on that night I swooned. Had I been a man, nay, had I had a man to call on, I would have gone forth and seized him. Yet, when I have told others that nightly, almost, the murderer came and gloated over the space where he slew the other, they derided me, said I was mad, would not even watch themselves. Oh, the horror of it! the horror of it!" "The horror is ended for you now, poor woman," the priest said. "Never more will he affright your sight when you rise from your bed. Yet do me one service, I beg you. Put on some clothes, for the night air gets cold"--she had, indeed, come forth from her room--where she had again been watching in terror, fearing to see another murder--in little else than her night raiment--"and go fetch the watch. I will see that he escapes not." The woman went away at his request, and coming out from the house, at which she was the concierge, with a cloak thrown over her shoulders, sped down the darkened streets, while once more the avenger and his prey were left alone. But they spoke no more to one another now; only stood there silent, facing each other. Yet once, after a few moments' pause, Fordingbridge chuckled audibly and whispered to himself. God only knows what was in the wretched man's mind as he did so; Archibald, at least, made no attempt to discover. For himself he was contented. Fate had thrown into his hands the assassin of his beloved brother--that was enough. Presently the woman came back, and with her three of the watch, armed and with a lantern borne in the hands of one, and into their custody the Jesuit gave Fordingbridge. Yet, since he could not feel at ease until he had seen the other safe under lock and key, he accompanied them to the prison--to which the guardhouse was attached--and handed him over to the officials there. "To-morrow," he said, "I will formally lay my charge against him before the Procureur du Roi; till then, I pray you, keep him safe. He is the murderer of the young Scotch officer who was slain outside the cathedral, and was my brother, as all Amiens knows." "Never fear, monsieur," said the chief of the watch; "we will keep him safe enough. Our cage is strong." * * * * * * *