11 - Fighting Man of Mars by Edgar Rice Burroughs

Under the twin moons of Barsoom, an unseen flier races toward the enigmatic city of Jahar, where Sanoma Tora, the kidnapped princess of Helium, is held captive. At the helm is Hadron of Hastor, devising a daring rescue plan that demands not just courage but remarkable ingenuity. For invisibility is not enough to combat The Death. If Hadron succeeds, he must confront the twisted genius of the madman responsible for this rescue mission. A FIGHTING MAN OF MARS is a thrilling tale of Martian adventure, as relayed by Ulysses Paxton on Mars to Edgar Rice Burroughs in Tarzana, via Pellucidars Gridley Wave. - Summary by Original text