"Look! Bill!" There was a note of terror in Kitty's voice.
Through the numerous doorways that debouched into the reception room, dozens of angry eyed Uvans charged. Some of them carried radium-guns which, somehow, they forgot to use. Bill glanced around hastily, then ducked into an unblocked doorway with Kitty.
"A passageway," he hissed. "It leads out. Hurry."
Racing through the dim passageway, they came to another door. This opened upon a curving Uvan street. As Bill stepped through the doorway, he saw another mob of Uvans hurrying toward the building. By now, gongs were ringing wildly throughout the entire city.
"Something went very wrong," Bill muttered. "We're going to put a lot of space between us and town."
Both he and Kitty ran as fast as their legs could carry them, following the long bed of the street. Behind them the pursuing crowd gathered in size and more natives came in from side streets.
"We're making it," gasped Kitty.
Bill glanced at the girl appreciatively. She wasn't only pretty but she was an athlete. She could run. Her face flushed with a clear golden healthiness as she matched strides with him.
A half mile more and they had cleared the limits of the Uvan metropolis. Bill's lungs burned for air. He had never done this much running in his life. He looked back, and thankfully, saw that the Uvans had been outdistanced and were giving up the chase. But—no!