"Solan," he was saying, "there is no risk and the reward is great. You know that you hate Salensus Oll and that nothing would please you more than to thwart him in some cherished plan. There be nothing that he more cherishes today than the idea of wedding the beautiful Princess of Helium; but I, too, want her, and with your help I may win her.

"You need not more than step from this room for an instant when I give you the signal. I will do the rest, and then, when I am gone, you may come and throw the great switch back into its place, and all will be as before. I need but an hour's start to be safe beyond the devilish power that you control in this hidden chamber beneath the palace of your master. See how easy," and with the words the black dator rose from his seat and, crossing the room, laid his hand upon a large, burnished lever that protruded from the opposite wall.