"Oh, it is utterly, fantastically incredible!" he groaned. "Yet, with my own eyes I saw--"

He stepped to a bookshelf and began to look for a book which, so far as his slight knowledge of the subject bore him, would possibly throw light upon the darkness. But he failed to find it. Despite the heat of the weather, the library seemed to have grown chilly. He pressed the bell.

"Marston," he said to the man who presently came, "you must be very tired, but Dr. Cairn will be here within an hour. Tell him that I have gone to Sir Michael Ferrara's."

"But it's after twelve o'clock, sir!"

"I know it is; nevertheless I am going."

"Very good, sir. You will wait there for the Doctor?"

"Exactly, Marston. Good-night!"

"Good-night, sir."

Robert Cairn went out into Half-Moon Street. The night was perfect, and the cloudless sky lavishly gemmed with stars. He walked on heedlessly, scarce noting in which direction. An awful conviction was with him, growing stronger each moment, that some mysterious menace, some danger uncla.s.sifiable, threatened Myra Duquesne. What did he suspect? He could give it no name. How should he act? He had no idea.

Sir Elwin Groves, whom he had seen that evening, had hinted broadly at mental trouble as the solution of Sir Michael Ferrara's peculiar symptoms. Although Sir Michael had had certain transactions with his solicitor during the early morning, he had apparently forgotten all about the matter, according to the celebrated physician.

"Between ourselves, Cairn," Sir Elwin had confided, "I believe he altered his will."

The inquiry of a taxi driver interrupted Cairn's meditations. He entered the vehicle, giving Sir Michael Ferrara's address.

His thoughts persistently turned to Myra Duquesne, who at that moment would be lying listening for the slightest sound from the sick-room; who would be fighting down fear, that she might do her duty to her guardian--fear of the waving phantom hands. The cab sped through the almost empty streets, and at last, rounding a corner, rolled up the tree-lined avenue, past three or four houses lighted only by the glitter of the moon, and came to a stop before that of Sir Michael Ferrara.

Lights shone from the many windows. The front door was open, and light streamed out into the porch.

"My G.o.d!" cried Cairn, leaping from the cab. "My G.o.d! what has happened?"

A thousand fears, a thousand reproaches, flooded his brain with frenzy. He went racing up to the steps and almost threw himself upon the man who stood half-dressed in the doorway.

"Felton, Felton!" he whispered hoa.r.s.ely. "What has happened? Who--"

"Sir Michael, sir," answered the man. "I thought"--his voice broke--"you were the doctor, sir?"

"Miss Myra--"

"She fainted away, sir. Mrs. Hume is with her in the library, now."

Cairn thrust past the servant and ran into the library. The housekeeper and a trembling maid were bending over Myra Duquesne, who lay fully dressed, white and still, upon a Chesterfield. Cairn unceremoniously grasped her wrist, dropped upon his knees and placed his ear to the still breast.

"Thank G.o.d!" he said. "It is only a swoon. Look after her, Mrs. Hume."

The housekeeper, with set face, lowered her head, but did not trust herself to speak. Cairn went out into the hall and tapped Felton on the shoulder. The man turned with a great start.

"What happened?" he demanded. "Is Sir Michael--?"

Felton nodded.

"Five minutes before you came, sir." His voice was hoa.r.s.e with emotion. "Miss Myra came out of her room. She thought someone called her. She rapped on Mrs. Hume's door, and Mrs. Hume, who was just retiring, opened it. She also thought she had heard someone calling Miss Myra out on the stairhead."

"Well?"

"There was no one there, sir. Everyone was in bed; I was just undressing, myself. But there was a sort of faint perfume--something like a church, only disgusting, sir--"

"How--disgusting! Did _you_ smell it?"

"No, sir, never. Mrs. Hume and Miss Myra have noticed it in the house on other nights, and one of the maids, too. It was very strong, I'm told, last night. Well, sir, as they stood by the door they heard a horrid kind of choking scream. They both rushed to Sir Michael's room, and--"

"Yes, yes?"

"He was lying half out of bed, sir--"

"Dead?"

"Seemed like he'd been strangled, they told me, and--"

"Who is with him now?"

The man grew even paler.

"No one, Mr. Cairn, sir. Miss Myra screamed out that there were two hands just unfastening from his throat as she and Mrs. Hume got to the door, and there was no living soul in the room, sir. I might as well out with it! We're all afraid to go in!"

Cairn turned and ran up the stairs. The upper landing was in darkness and the door of the room which he knew to be Sir Michael's stood wide open. As he entered, a faint scent came to his nostrils. It brought him up short at the threshold, with a chill of supernatural dread.

The bed was placed between the windows, and one curtain had been pulled aside, admitting a flood, of moonlight. Cairn remembered that Myra had mentioned this circ.u.mstance in connection with the disturbance of the previous night.

"Who, in G.o.d's name, opened that curtain!" he muttered.

Fully in the cold white light lay Sir Michael Ferrara, his silver hair gleaming and his strong, angular face upturned to the intruding rays.

His glazed eyes were starting from their sockets; his face was nearly black; and his fingers were clutching the sheets in a death grip.

Cairn had need of all his courage to touch him.

He was quite dead.

Someone was running up the stairs. Cairn turned, half dazed, antic.i.p.ating the entrance of a local medical man. Into the room ran his father, switching on the light as he did so. A greyish tinge showed through his ruddy complexion. He scarcely noticed his son.

"Ferrara!" he cried, coming up to the bed. "Ferrara!"

He dropped on his knees beside the dead man.

"Ferrara, old fellow--"

His cry ended in something like a sob. Robert Cairn turned, choking, and went downstairs.

In the hall stood Felton and some other servants.

"Miss Duquesne?"