Only for an instant did John Hammond stand motionless after hearing that unearthly shriek. In the next moment he rushed into the corridor, expecting to hear the sound repeated, to find himself face to face with some midnight robber, whose presence had caused that wild cry of alarm. But in the corridor all was silent as the grave. No open door suggested the entrance of an intruder. The dimly-burning lamps showed only the long empty gallery. He stood still for a few moments listening for voices, footsteps, the rustle of garments: but there was nothing.

Nothing? Yes, a groan, a long-drawn moaning sound, as of infinite pain. This time there was no doubt as to the direction from which the sound came. It came from Lady Maulevrier's room. The door was ajar, and he could see the faint light of the night-lamp within. That fearful cry had come from her ladyship's room. She was in peril or pain of some kind.

Convinced of this one fact, Mr. Hammond had not an instant's hesitation. He pushed open the door without compunction, and entered the room, prepared to behold some terrible scene.

But all was quiet as death itself. No midnight burglar had violated the sanctity of Lady Maulevrier's apartment. The soft, steady light of the night-lamp shone on the face of the sleeper. Yes, all was quiet in the room, but not in that sleeper's soul. The broad white brow was painfully contracted, the lips drawn down and distorted, the delicate hand, half hidden by the deep Valenciennes ruffle, clutched the coverlet with convulsive force. Sigh after sigh burst from the agitated breast. John Hammond gazed upon the sleeper in an agony of apprehension, uncertain what to do. Was this dreaming only; or was it some kind of seizure which called for medical aid? At her ladyship's age the idea of paralysis was not too improbable for belief. If this was a dream, then indeed the visions of Lady Maulevrier's head upon her bed were more terrible than the dreams of common mortals.

In any case Mr. Hammond felt that it was his duty to send some attendant to Lady Maulevrier, some member of the household who was familiar with her ladyship's habits, her own maid if that person could be unearthed easily. He knew that the servants slept in a separate wing; but he thought it more than likely that her ladyship's personal attendant occupied a room near her mistress.

He went back to the corridor and looked round him in doubt, for a moment or two.

Close against her ladyship's door there was a swing door, covered with red cloth, which seemed to communicate with the old part of the house. John Hammond pushed this door, and it yielded to his hand, revealing a lamp-lit passage, narrow, old-fashioned, and low. He thought it likely that Lady Maulevrier's maid might occupy a room in this half-deserted wing. As he pushed open the door he saw an elderly man coming towards him, with a candle in his hand, and with the appearance of having huddled on his clothes hastily.

'You heard that scream?' said Hammond.

'Yes. It was her ladyship, I suppose. Nightmare. She is subject to nightmare.'

'It is very dreadful. Her whole countenance was convulsed just now, when I went into her room to see what was wrong. I was almost afraid of a fit of some kind. Ought not her maid to go to her?'