Master Mind of Mars (Version 2)

World War I infantry captain Ulysses Paxton is transported to Barsoom, where he encounters evil scientist Ras Thavas and his diabolical brain transplant experiments. Paxton falls in love with the beautiful Valla Dia, whose body has been swapped with the cruel Xaxa, Jeddara of Phundahl. Can Paxton save Valla Dia from a hideous fate and win her hand?

The Master Mind of Mars is the sixth book in Edgar Rice Burroughs’ Barsoom series. - Summary by The Narrator