vile trick in the corporate playbook to stop them. In spite of those tricks, they land on Mimas, Saturn's innermost moon, and set up camp. Immediately Dr. Rhodes takes one of the rocketship's two lifeboats and flies it into the rings. Radio contact is lost as the signal is lost in intense static. While waiting for radio contact to resume, Bruce and the others find artefacts, signs that an alien city once occupied the ground on which they stand and has since crumbled into the gravel on which their ship and camp sit. When radio contact still has not been reestablished and only one day remains before the expedition must leave Saturn to return to Earth, Bruce takes the other lifeboat and flies into the rings. With some effort and luck he finds his father, whose rocketboat had broken down, and the two men return to Mimas just in time to see Garcia and Benz take off in their rocketship and head for Hidalgo. So intent are Garcia and Benz on running the ship that they don't notice the lifeboat landing behind them. Marooned, the Rhodeses decide to write down descriptions of their discoveries for future explorers to find. While the Rhodeses are exploring, two of the villains arrive, but an old Saturnian cannon destroys their ship and kills them. In the wreckage of the ship Bruce and his father find three fuel tanks, intact and full. With nothing to lose, they fuel up an old Saturnian rocket and blast off. Shedding parts as it goes, the rickety craft barely gets the men to the asteroid Hidalgo, where Garcia and Benz run to greet them and the four men settle down for a long and successful journey to Earth. Publication history 1954, US, John C. Winston Co., Feb 1954, Hardback (xi+207 pp) 1955, Italy, Arnoldo Mondadori Editore (I Romanzi di Urania #70), Feb 1955, Paperback Digest (128 pp), as Il Mistero di Saturno (The Mystery of Saturn) 1956, Germany, Pabel (Utopia Grossband #45), Dec 1956, Paperback Digest (89 pp), as Das Geheimnis der Saturnringe (The Secret of Saturn's Rings) 1958, Sweden, Wennerberg (Rymd-böckerna #9), Paperback, as Planetringarnas Gåta (The Ringed Planet's Riddle) 1959, US, John C. Winston Co., Jun 1959, Hardback (xi+207 pp) 1960, France, Les Editions Daniber (Daniber-Science Fiction-Suspense #5), Apr 1960, Paperback (190 pp), as Le Secret des Anneaux de Saturne (The Secret of Saturn's Rings) 1966, US+Canada,