"Then I suddenly recollected that I had not seen Annette. When I reached her room I found her wide awake and as terrified as when she came back from the village. I suppose she was too upset to take your medicine, for the bottle stood unopened on the table. After I had given it to her she went off to sleep almost immediately, but not before she had told me something which disturbed me very much. As she lay with the bedroom door open, the firelight shone upon the wall on the other side of the corridor, and she declared she had seen a shadow on the wall like one of the figures that had so frightened her in the wood. I pretended to be angry and incredulous, but I confess that I was really rather startled. It seemed so strange that a quiet country house should suddenly be invested with such an atmosphere of mystery. Why did that man try to get into the conservatory? And why were those figures?—but I am wandering from the point."

"I think we had better have facts, first," Wilfrid said.

"Oh, yes. Well, I went back to my room after seeing Annette to sleep, and I fear I must own to feeling considerably frightened. It was a relief to find that somebody was still about downstairs, and to remember that there were so many dogs about the house. Then I remembered my little terrier who always sleeps on a mat at the end of the corridor. It is warm there, because I have had the place fitted with hot-water pipes and turned it into a conservatory where I grow exotic plants. It struck me as singular that the dog should give no alarm if anybody were wandering about the house, and I went out to see if he were all right. I did not turn on the lights because I would not pander to my own weakness. Besides, I could find my way about the corridor blindfolded. And then, in the darkness, I saw an amazing thing—a globe of flickering blue fire, about the size of a football. It moved in the most extraordinary way, and at first I thought the floor was alight. But I abandoned that idea when I saw a long, lean arm thrust out and a brass cup held over the flame. Oh, I must tell you that before that I noticed a peculiar scent of the most strange and overpowering description. I thought that one of my new plants had come into bloom and that this was the perfume of it. Then I saw how mistaken I was, and that the odour arose from the brass cup over the flame. After that I recollect nothing else except that I became terribly drowsy and when I recovered I was in my own room with the door locked on the outside. I cannot tell you how thankful I was to hear your voice."

"It is very strange," Wilfrid said. "Obviously you did not go back to your room by yourself. Therefore, some one carried you there. I think you may make your mind easy as far as you are personally concerned. Whoever these mysterious individuals may be, they bear no enmity to you."

"Then whom do they want?" Beatrice asked.

Wilfrid was silent for a moment. He could give a pretty clear answer to the question. But Beatrice was already terrified and troubled enough without the addition of further worry. Cotter's incoherent terror and his wild speech had given Wilfrid a clue to the motives which underlay this strange business.

"We will discuss that presently," he said. "In the meantime, it will be as well to find out why your dog did not give an alarm."

The black and white terrier lay on his mat silent. He did not move when Beatrice called. She darted forward and laid her hand upon the animal's coat. Then an indignant cry came from her lips.

"The poor thing is dead," she exclaimed. "Beyond doubt the dog has been poisoned by those fumes. And look at my flowers, the beautiful flowers upon which I spent so much time and attention! They might have been struck by lightning."

Wilfrid could see no flowers. Across the great west window was a brown tangled web hanging in shreds; in the big pots was a mass of blackened foliage. But there was nothing else to be seen.