He drew back shivering in every limb, and the voice followed him, shrieking now in a sudden burst of insane mirth and dying away a moment later in a hollow cackling laugh that seemed to curdle the blood in his veins.

Mad! Obadiah Price was mad! Step by step Nathaniel fell back from the door.

He felt himself trembling from head to foot.

His heart thumped within his breast like the beating of a hammer.

For an instant there was silence--a silence in which strange dread held him breathless while he watched the glow in the door and listened.