From epubbooks.com:
A freak storm on Mars throws Tara, Princess of Helium and beautiful daughter of John Carter, wildly off course after she embarks on an imprudent flight. Gahan, Jed of Gathol, her new admirer, takes off in pursuit and they soon find themselves in a land of bodies without heads and heads without bodies. In Chessmen of Mars, Edgar Rice Burroughs once again whirls the reader into an entertaining maelstrom of breakneck action.