At eight thousand feet the aero-subs swung into battle formation and, as though controlled by word of command, they maneuvered there like one vast machine of a central control—beautiful as the flight of swallows, deadly as anything that flew.

The Secret Agents swept the cold sweat from their brows, and sighs of terror escaped them all.

At that moment came the voice, loud in the Secret Room, which Kleig at least immediately recognized:

"Well, gentlemen, are you satisfied that resistance is futile?"

And Kleig whispered the name, over and over again.

"Moyen! Moyen!"

It was Prester Kleig, Master of the Secret Room, who was the first to regain control after the nerve-numbing question which, asked in far Madagascar, was heard by the Agents in the Secret Room.

"No!" he shouted. "No! No! Moyen, in the end we will beat you!"

Only silence answered, but deep in the heart of Prester Kleig sounded a burst of sardonic laughter—the laughter of Moyen, half-god of Asia. Then the voice again:

"The attack is beginning, gentlemen! Within an hour you will have further evidence of the might of Moyen!"