Tom Corbett, Roger Manning and Astro of the Polaris unit have barely finished hazing the new Space Academy cadets when they are drawn into trouble out among the moons of Jupiter. Flying with the veteran spaceman Kit Barnard aboard the Good Company, they discover that someone is determined to see the ship fail, and treachery waits between Earth and Ganymede.
Fast, cheerful 1950s space adventure from the Tom Corbett series, with technical advice from Willy Ley. Download the free EPUB.