Gradually the insensate pounding in his head abated, and strength returned to his body. When at last he saw light beyond a narrow fissure around an angle in the cavern, he had almost recovered. In moments he was gazing out over a plain bathed in the glow of a leprous moon. As he stared, he shivered; and it was not because of the cold draft drawing through the fissure, fanning his brine-drenched body. Grim and starkly forbidding the plain lay before him, dead as the frozen landscape of the moon. Once there had been life there, but now only the skeletons of trees remained, lifting their wasted limbs in rigid pleading to an unresponsive sky. Some, there were, that had fallen, uprooted by the fury of passing hurricanes; these lay like the scattered bones of a dismembered giant, age-blackened, and painted with hoarfrost by the brushes of moonlight. Feebly the dead forest stirred under the touch of a moaning wind, and the gaunt shadows cast by the trees seemed to be multi-armed monsters slithering over the rocky earth. He looked beyond the trees, and he saw light. Little squares of pale radiance cut high in the walls of an ancient black castle. Castle? Cliff frowned. He could liken it to nothing else, though he could not recall ever having seen a castle which thrust curving, needle-thin spires into the sky like a devil's horns. Impatiently Cliff stepped from the wall of rock and glanced along a path that writhed through the forest; glanced--and crouched swiftly, a low cry escaping him. A single spot of water on a smooth, flat stone! A spot shaped like a woman's shoe! Vilma had passed this way! But--might it not have been some other woman from the _Ariel_? No! They had been carried--and even if they had walked, their feet were dry! Like a hound on the scent, Cliff Darrell sped along the serpentine path. The wind moaned above him, and the soughing branches seemed to whisper croaking warnings, but he ran on, his eyes constantly seeking signs of Vilma's course. Here a drop of water shaken from her drenched skirt, there another; and Cliff blessed the full moon whose light made possible his trailing of the almost invisible spoor. Now he had passed beyond the dead forest and was moving toward the castle. The trail had been growing steadily fainter, but he managed to follow it. It led him toward a narrow stone stairway climbing crookedly to a misshapen opening in the wall. Light glowed faintly lurid somewhere deep within; and now Cliff heard a blasphemous sound belch from the depths of the castle--a wheezing, sardonic croaking like the moan of a demoniac organ, rumbling an obscene dirge. His hair bristled, and he stopped short. He looked at the steps, searching for the fading trail--and he stiffened. There on the second step was an irregular blotch of moisture! What did it mean? Had Vilma crouched there? Had she ascended those steps? Entered? * * * * *