Description: "For thousands of years, the Terran Empire had known peace. Then
came violent creatures whose only desire was destruction. They had quietly
amassed an arsenal of weapons. They were ready for war. But Earth was
not!
"The first planet to be conquered would be an obscure world of medieval
peasants. It would be slaughter - unless some highly unconventional espionage
was attempted, by three altogether unusual Terran agents."
