The outlaws of Mars (Ace book)

Plot

"Sentenced to Death! A master of the sword and planet genre, Otis Adelbert Kline is considered by many to be the only true equal of Edgar Rice Burroughs. From his position on the original editorial staff of Weird Tales and as the literary agent for Conan creator Robert E. Howard, Kline was instrumental in shaping the face of science fiction as we know it. Now, in its first complete edition since 1934, Kline blasts off to Mars with the story of Jerry Morgan, a disgraced American soldier convinced he has nothing left to live for. Nothing, that is, until his eccentric scientist uncle offers to make him the first man to explore the Red Planet in person. Transported through space by powers beyond his understanding, Jerry lands on Mars only to find himself sentenced to death for a crime he didn't commit. Hunted by both sides of a vicious civil war and spurned by the beautiful princess he loves, Jerry Morgan is left with only one choice: to unite the slaves and malcontents of the Red Planet beneath his own banner, and take the throne himself as an outlaw of Mars"--Page 4 of cover.