Don Harvey was attending school on Earth when his parents suddenly and urgently called him home to Mars. He had been skeptical about the talk of interplanetary war breaking out if Mars and Venus followed through on their threats to declare independence from Earth, but he was wrong. War broke out, and he was stuck on Venus, with no way of getting home. Then there was the ring that an old family friend had given him just before he had left Earth. Shortly afterward, the friend had been questioned by Earth's secret police and had died – from "heart failure," they claimed. When Earth troops landed on Venus and started looking for Don and that mysterious ring, he realized that he was trapped in the center of a war between worlds that could change the fate of the Solar System forever!
Robert Anson Heinlein (1907–1988) was an American science fiction writer. Often called the "dean of science fiction writers", he was one of the most influential and controversial authors of the genre in his time. He set a standard for scientific and engineering plausibility, and helped to raise the genre's standards of literary quality.
He was one of the first science fiction writers to break into mainstream magazines such as The Saturday Evening Post in the late 1940s. He was one of the best-selling science fiction novelists for many decades. He, Isaac Asimov, and Arthur C. Clarke are known as the "Big Three" of science fiction.
Heinlein, a notable writer of science fiction short stories, was one of a group