Otis Adelbert Kline's final triumphant sword-and-planet epic soars back into print for the first time in almost 50 years! Jerry Morgan accepts his scientist uncle's offer to transport him to Mars for a series of thrilling adventures and exploits featuring terrible monsters, fantastic societies, and gorgeous princesses in the Edgar Rice Burroughs tradition. At last presented in the original, unabridged format last seen in 1934's Argosy Weekly, the new Planet Stories edition of this science fiction classic restores Kline to his place of honor in the sword-and-planet field.