Thuvia, Maid of Mars moves the focus of Burroughs’ Martian series to Carthoris, the son of the human John Carter and Martian Dejah Thoris and the prince of Helium. Princess Thuvia of Ptarth and Prince Carthoris of Helium are in love. Fate, however, is against them: the princess is promised to another, the Jeddak of Kaol, Kulan Tith...