Ankova stepped over the prostrate form and engaged the one who had stood behind him. The second Space Man fared little better. He made but a brief and unsuccessful defense and then he too went down. And so Ankova, who before his capture had won fame among the tribes of the Star People as one of the mightiest fighters that their race had ever produced, battled on in the narrow passage until the seven Space Men whom Hekalu had sent to put him and Austin Shelby under restraint were either dying or dead. The victor glanced down the corridor--saw at the farther end a small portion of the control room's interior. Koo Faya, the Martian, was there, working with demoniac haste over switches and dials. Ankova drew his pistol, started to aim at the slave, and then thought better of it. There was a tenseness within the hull of the _Selba_--something which made a deep impression on Ankova's keen intuition. His muscles tautened and a tingling sensation rippled over his ebony hide. The vibrations of the rocket motors were more noticeable than usual. Evidently the ship was tearing along at the greatest speed it could attain. And it swayed unnaturally. Ankova knew the layout of the _Selba_ well, for he had traveled in it often. And now he sensed quite clearly what was happening. He hurried to a supply room and selected a space armor from a rack. His Earthman friend might need it. Then he dashed back to the room In which he and Shelby had been imprisoned. A glance out of the window confirmed his suspicions as to what was going on. The force of Space Men which was acting as an escort for the _Selba_ had arranged itself in a sort of spherical protecting network around the craft. Another and superior force was attempting savagely to pierce this formation. The foes of Hekalu's henchmen would draw themselves into cone-shaped groups and rush the defenders, and the latter would swarm over the cones like angry and determined hornets. A hot fight was in progress out there. The ether was lit with green flashes of light, and fragments of the bodies of Space Men and their vehicles already strewed the void. In this running battle the _Selba_ was not idle. Her torpedoes were exploding among the attackers with blinding glares of light. Ankova wondered who the would-be destroyers of the _Selba_ were. Clearly they were not the forces of his father, for they had not yet had time to arrive. Some stray tribe perhaps. He wished that he might see their insignia, but owing to their distance from the ship and their eccentric movements, this was impossible. He did not know that they were the minions of Alkebar who had turned enemy to Hekalu but a few hours before.