 What was the special power held by Altha?
[Transcriber's Note: This etext was produced from Planet Stories Winter 1944. Sisko Rolf's stocky body was a blur of motion as he cut the rocket jets, doused the twin searchlights, and switched over to the audio beams that served so well on the surface when blind flying was in order. But here in the cavern world, thirty-seventh in the linked series of vast caves that underlie the waterless wastes of Mars, the reflected waves of sound were of little value. Half of the oval bar he crushed between his teeth, and when the concentrated energy flooded into his muscles he set off around the irregular wall of the pit. He uncapped the torch and the miniature sun glowed redly from its lensed prison to reveal the rocky corridor stretching out ahead. He found himself shooting downward into a vast void that glowed softly with a mysterious all-pervading radiance. As the spinner dropped him slowly down into the vast emptiness of the great shining gulf, Rolf could see that a broad band of stone divided the green fertile plains and forests from the desolate desert wastes of the other half. Toward this barrier the spinner bore him, and Rolf was content to let it move in that direction—from the heights of the wall he could scout out the country beyond. The wall expanded as he came nearer to the pygmy planet. The spinner had slowed its speed; it seemed to Rolf that he must be falling free in space for a time, but the feeble gravity of the tiny world tugged at him more strongly as he neared the wall. So slowly was the spinner dropping that the blackened desolation of the other hemisphere came sliding up beneath his boots. Deftly Rolf nested the spinners again in their pack before he set out toward the heaped-up mass of stone blocks that was the wall. "Down, Altha," a deeper voice rumbled from above, "it's one of the Enemy." This mysterious world that floated above the cavern floor might be their headquarters. "You know their leader, Cannon, wanted you. A beautiful woman she was, with the long burnished copper of her hair down around her waist, but beneath the meager shortness of the skin tunic he saw that her firm flesh was covered with a fine reddish coat of hair. His instructors there had known that a few gifted mortals possess the power of a limited telepathy, and the secrets of the Planet Patrol must be guarded. Altha's lips thinned and her brown-flecked eyes flamed.
 She could see into other's minds.
 She could see in the dark.  She could see into other's minds.  She feared nothing.  She could see into the future.