Stern's hand twitched, with the automatic gripped in the fingers, but the blacksmith cried a warning.
"Raise not that hand, slave!" he ordered. "You cannot shoot without the danger of killing this vile spawn of yours! And remember, too, the river lies far below, and very sharp are the waiting rocks!
"Fool that you are, that think yourself so wise! To leave this place with me! With me, skilled in all labors of metal and stone, strong to cut passage-ways--"
"You devil! You hewed a way into my house?"
H'yemba laughed brutally.
"Silently, steadily, I labored!" he boasted. "And behold the reward! Power for me; eternal slavery for you and all your blood--if any live!"
Insane with rage and hate, Allan nevertheless realized that now all depended on keeping his thought and nerve.
One single premature move and his son would inevitably be hurled over the parapet, down two hundred and fifty feet to the river-bed below. At all hazards, he must keep cool!
The smith, after all only a barbarian and of limited intelligence, had not even thought of the obvious command to make Stern drop his pistol on the floor.
Upon this oversight now hung all Allan's hopes.
Even though the man's retainers might rush the cave and slaughter all, yet in Allan's heart burned a clear and steady flame of hot desire to compass H'yemba's death.
And as the smith now loudly boasted, insulted, vilified, in the true manner of the savage, imperceptibly, inch by inch, Allan was turning his pistol-barrel upward.
Higher, higher, bit by bit it crept toward the horizontal. Unaccustomed to shoot from the hip, Allan realized that right before him lay a supreme test of nerve and marksmanship and skill.
To shoot and kill his boy--the thought was too hideous even to be considered. His father-heart yearned toward the frightened, crying child there in the traitor's grip.
The unconscious form of Beatrice fever-burned and panting on the bed, seemed calling aloud to him: "Aim true, Allan! Aim true!"
For one false shot inevitably sealed the child's death. To wound H'yemba and not kill him meant the catastrophe. If the bullet failed to enter brain or heart, H'yemba--though mortally hurt--would of a surety, with his last quiver of strength, sling the boy outward over the dizzying parapet.
Allan prayed; yet his prayer was wordless, formless and unconscious.
He dared not glance down at the automatic. His eyes must hold the smith's. And he must speak, must parley, at all hazards must still gain another moment's respite.
What Allan said in those last terrible, eternal seconds he could never afterward recall.
He only knew he was treating with the enemy, making terms, listening, answering--all with mechanical sub-consciousness.