Then, as Natala twisted her tear-stained face over her shoulder to shriek for mercy, something froze her cries. Agony gave place to paralyzing horror in her beautiful eyes.

Struck by her expression, Thalis checked her lifted hand and whirled quick as a cat. Too late! An awful cry rang from her lips as she swayed back, her arms upflung. Natala saw her for an instant, a white figure of fear etched against a great black shapeless mass that towered over her; then the white figure was whipped off its feet, the shadow receded with it, and in the circle of dim light Natala hung alone, half fainting with terror.

From the black shadows came sounds, incomprehensible and blood-freezing. She heard Thalis's voice pleading frenziedly, but no voice answered. There was no sound except the Stygian's panting voice, which suddenly rose to screams of agony, and then broke in hysterical laughter, mingled with sobs. This dwindled to a convulsive panting, and presently this too ceased, and a silence more terrible hovered over the secret corridor.

Nauseated with horror, Natala twisted about and dared to look fearfully in the direction the black shape had carried Thalis. She saw nothing, but she sensed an unseen peril, more grisly than she could understand. She fought against a rising tide of hysteria. Her bruised wrists, her smarting body were forgotten in the teeth of this menace which she dimly felt threatened not only her body, but her soul as well.

She strained her eyes into the blackness beyond the rim of the dim light, tense with fear of what she might see. A whimpering gasp escaped her lips. The darkness was taking form. Something huge and bulky grew up out of the void. She saw a great misshapen head emerging into the light.