During the prolonged war between Earth and Sirius, Earth agent James Mowry is surgically altered to resemble a Sirian, trained in the arts of espionage, subversion, and propaganda, and sent to infiltrate and weaken the Sirian Combine

Product Description: 81,82 new hostile worlds discovered: 83 - and then another five propulsors blew their linings simultaneously and Scout-Officer John Leeming knew he would have to make a crash landing. Soon he was a prisoner of the Zangastans - and filled with a determination to get back to Earth just as soon as possible...read more

Presents a collection of five novels, including 'Wasp' and 'Sinister Barrier,' and three short stories.

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Product Description: In less than a century, 50 percent of the human race fled the aged and autocratic Terra, settling wherever they could establish a world of their own choosing. The following centuries result in hundreds of independent new civilizations--too independent for an ambitious Terran government out to conquer an empire...read more

The 'Marathon,' an interstellar spaceship, and her crew encounter numerous adventures as they visit planets throughout the universe