Their luck had been good, but it was not destined to be as good as that. They caught but a brief glimpse of the bewildering array of switches, dials and levers, that constituted the brain-center of the craft. Standing on guard before his instrument panels was the mahogany-colored slave Koo Faya. He was half crouching, at bay. There was a murderous light in his eyes, and he held leveled in his hands a light machine gun. Shelby's automatic was leveled too, and he pressed his trigger an instant before the Martian. Four bullets whizzed into the control room, splattering close about the thin mummy-like body of Koo Faya. A glass globe that glowed redly on the top of a complicated mechanism, was struck and burst with a popping sound. A rose-colored vapor floated ceiling-ward. * * * * * Simultaneously Koo Faya's weapon began to whir. Then, even as Shelby jerked Jan back out of danger, the wild shriek of an alarm siren mingled with the discordant clashing jangle of ungoverned machinery running amuck, rang through the ship, and the huge metal cigar pitched and careened like a frightened thing. Alkebar, having recovered his pistol, was staggering down the passage shooting rapidly. But owing to the crazy motion of the space flier his missiles were momentarily not taking effect. Austin and Jan knew that Koo Faya was leaping to a position where he could shoot his poisoned darts at them again. What now? Cornered? No! Janice Darell wrenched open a door in the side of the passage and shoved Shelby into the tiny room beyond. In the opposite wall of the closet was a round dark opening. "The emergency flier," Jan shouted. "Into it!" As quickly as they could they climbed through into the submarine-like interior beyond. Fighting to keep themselves erect, they slammed the heavy duralumin portal to and fastened it. Alkebar was already groping on the opposite side. But he was too late. Shelby leaped to the control panel and cut the electric current from the magnets that held the emergency flier anchored to its mother ship. It floated, free from the careening hulk. Its rocket motors roared into life. The occupants of the tiny craft looked back at the _Selba_. It had ceased its mad motions now, and was hanging quietly in space. Evidently Koo Faya had succeeded in righting matters to some slight extent at least. Would he be able to patch things up entirely? The red globe could be replaced in half an hour. It would be that length of time at least before the _Selba_ could engage in pursuit. But the arm of a space ship, equipped with weapons commonly used in the void, is long. Hence Austin Shelby considered it his first duty to put as much distance between his craft and Hekalu's ship as possible. Still four million miles away, Mars glowed--a tiny red disc; and he headed toward her giving the flier full freedom to do its best. The fiery vapors fairly tore from the rocket nozzles.