The dark suddenly seemed to give him almost physical pain. Listening acutely, he tried to account for this. Why were the lights out? The street lights were on, and there was light in several of the homes he had passed. He stood motionless. There was no sound. The dark house was buried in deathlike silence.
Then, with nerve-shattering suddenness, came a sound as real as that of his heart, which was beating so that the blood was throbbing in his ears. He whirled to face it, but, as suddenly as it had started, it stopped. With clenched teeth and damp forehead, Mac stood motionless. Then it came again—a sound like the distant scream of a siren.
Gradually he collected his senses, and reason took the place of bewilderment. He reached for his matches, and, striking one, he stepped over to the gas chandelier, turned the valve, and presently a blue flame leaped high from the lamp, which had not been adjusted for months.
With somewhat trembling hands, he turned the air adjustment, then the gas, until finally the familiar yellow light illuminated the hallway. Then he again heard the noise—this time a little louder and nearer.
His decision to investigate suddenly left him. He stood motionless, unable to move, for he not only heard—he also felt! Then, with a sudden resolve, he stepped swiftly to his room, which was on the same floor and adjoined the library.
The light from the hall cast a long, distorted shadow on the floor before him. It was so still now that the silence surged in his ears. Lighting his own gas lamp, he locked and bolted his door. His pipe lay on the dresser, and he lit it nervously. Then he looked at himself in the mirror.
“How ridiculous!” he said, half aloud, with a forced laugh. Then he began slowly to undress.
All was quiet and peaceful here in his own room. How foolish to let himself get so excited. The lights had probably gone out all over the city since he had entered the house, and, as for that noise, it was probably outdoors somewhere and in his mind he had associated it with the perfectly harmless corpse lying in the next room.
“Darn Brown!” he murmured. “He got me all wrought up over nothing with his kidding.”
And, having finished undressing he retired, leaving his light on full, however. In spite of the fact that his own explanation of the origin of the strange sounds had, in a measure, satisfied him, he lay awake for a considerable length of time.