Earlier in the evening there had been a young moon on Isla Water. Under it spectres of the mist floated in the pale lustre; a painted moorhen steered through ghostly pools leaving fan-shaped wakes of crinkled silver behind her; heavy fish splashed, swirling again to drown the ephemera. But there was no moonlight now; not a star; only fog on Isla Water, smothering ripples and long still reaches, bank and upland, wall and house. The last light had gone out in the stable; the windows of Isla were darkened; there was a faint scent of heather in the night; a fainter taint of peat smoke. The world had grown very still by Isla Water. Toward midnight a dog-otter, swimming leisurely by the Bridge of Isla, suddenly dived and sped away under water; and a stoat, prowling in the garden, also took fright and scurried through the wicket. Then in the dead of night the iron bell hanging inside the court began to clang. McKay heard it first in his restless sleep. Finally the clangour broke his sombre dream and he awoke and sat up in bed, listening. Neither of the two servants answered the alarm. He swung out of bed and into slippers and dressing-gown and picked up a service pistol. As he entered the stone corridor he heard Miss Erith's door creak on its ancient hinges. "Did the bell wake you?" he asked in a low voice. "Yes. What is it?" "I haven't any idea." She opened her door a little wider. Her yellow hair covered her shoulders like a mantilla. "Who could it be at this hour?" she repeated uneasily. McKay peered at the phosphorescent dial of his wrist-watch: "I don't know," he repeated. "I can't imagine who would come here at this hour." "Don't strike a light!" she whispered. "No, I think I won't." He continued on down the stone stairs, and Miss Erith ran to the rail and looked over. "Are you armed?" she called through the darkness. "Yes." He went on toward the rear of the silent house and through the servants' hall, then around by the kitchen garden, then felt his way along a hedge to a hutchlike lodge where a fixed iron bell hung quivering under the slow blows of the clapper. "What the devil's the matter?" demanded McKay in a calm voice. The bell still hummed with the melancholy vibrations, but the clapper now hung motionless. Through the brooding rumour of metallic sound came a voice out of the mist: "The hours of life are numbered. Is it true?" "It is," said McKay coolly; "and the hairs of our head are numbered too!" "So teach us to number our days," rejoined the voice from the fog, "that we may apply our hearts unto wisdom." "The days of our years are three-score years and ten," said McKay. "Have you a name?" "A number." "And what number will that be?" "Sixty-seven. And yours?" "You should know that, too." "It's the reverse; seventy-six." "It is that," said McKay. "Come in." He made his way to the foggy gate, drew bolt and chain from the left wicket. A young man stepped through.