The miners changed shift promptly, and the last should have gone down the Primo shaft by a quarter past at the latest. The shaft house would be empty, as no hoisting was being done on the night shift.

She turned out the light in her living-room, wrapped herself in a dark lodenmantel, a long cape with a hood that she had worn while climbing in Bavaria, and let herself out. She walked through the grove to the edge of the bluff above her camp and stood for a few moments, listening intently. Some ten minutes since she had heard the warning shriek of an automobile horn, but the garage of her manager, who had motored Whalen into Butte, was on the flat, and he had had time either to go down into the mine or climb to his own cottage.

The moon was at the full and the scene as sharply outlined as by day, although less animated. Save for the usual raucous noises of a mining camp the only sign of life was in the saloon. Some one was playing a pianola, and through the open door she saw men standing at the bar. For a moment she was tempted to take the surface path across the camps; but the risk was too great. Some one was sure to be abroad, and although she had been willing to brave the scorn of the world when there was no apparent alternative, she shrank from the plain Saxon the miners would use if they saw her. From Gregory’s shaft house she could reach his cabin by the path behind the abandoned cut.

A light was burning in her shaft house. She was not expert enough to descend the ladder candle in hand, and for a moment faltered above the darkness of the well; she had not been down before at night. Then she reflected that it was always night in the mines and descended without further hesitation.

At the foot of the shaft the usual station was one with the chamber left after removing the first large deposit of ore. They had merely cut through the vein at this point without stoping, and the great excavation had a lofty roof. Ora struck a match and lit a candle near by. On the day of the geologists’ visit a number of miner’s candlesticks had been thrust into what little wood there was in the chamber, and the candles were but half burnt out. Then she lit the one she had brought in her pocket. Accustomed as she was by this time to the route underground by chamber and gallery to the Perch mine, she always picked her way carefully, particularly down the first drift; her lessees, impatient at the leanness of the connecting vein, and not wishing to spend either the time or the money to sink the shaft another hundred feet, had understoped, and the holes were ill-covered.

She crossed the large black cavern toward the first of these tunnels, or drifts, sweeping the candle about her head, and then holding it downward, for she always feared cave-ins. The room was almost untimbered, owing to the hardness of the rock.

She had almost reached the mouth of the drift, when she paused suddenly, listened intently, and then blew out her candle. Some one was on the ladder. It was one of the miners, no doubt. Something had detained him above ground, and not daring to summon the shaft house man, he was sneaking down the ladder. He would go on down to the second level of the mine. Ora stood motionless, her hood pulled over her white face. Her miners were good average men, but the saloon flourished, and was no doubt responsible for the present delinquency.

Then once more she listened intently. The upper part of her body stiffened like a startled animal’s. Whoever was coming down was making his first descent by foot; not only was his progress slow, but he was breathing heavily, and hesitating between rungs, as if it were his first experience of an inclined ladder. Miners hate the shaft ladder, and will resort to any subterfuge to avoid it, but they are experts in “negotiating” it nevertheless. No doubt this was some green hand, recently employed. Or possibly the man was drunk.

Then suddenly Ora turned cold with the chill of the mine itself, a mere physical attribute that her warm blood had never deigned to notice before. A form was slowly coming into view below the high roof of the cavern, and although it was little more than a blot on the general blackness, Ora’s keen eyes, accustomed to the faint relief given by the candle near the shaft, noted as it descended further that it covered more of the ladder than it should. Miners are almost invariably thin and they wear overalls. This person wore a heavy cape like her own. But it was not alone the garment, which any miner would scorn, that betrayed the sex of the invader; it may have been the physical awkwardness, the shallow breathing, or some subtle psychical emanation—or all—that warned Ora of the approach not only of a woman but of a malignant force.

And this woman was following her. There was no doubt in her mind of that. She suffered a moment or two of furious unreasoning terror as she crouched against the wall and watched that shadow against a shadow slowly descend the final rungs of the ladder. Her first impulse had been to flee down the drift, but there was danger of falling into one of the gouge holes and disabling herself. She dared not relight her candle.