Edgar Rice Burroughs whisks us back to his legendary version of Mars, Barsoom, but with a fresh face. This time, our guide isn't John Carter, but Ulysses Paxton, a soldier from Earth who finds himself transported to the Red Planet after dying in World War I.

The Story

Paxton is discovered by Ras Thavas, the 'Master Mind' of the title, who is the greatest scientist and surgeon on Mars. Ras Thavas runs the city of Toonol like a macabre business, specializing in brain transplants. He sells immortality to the wealthy by transferring their aged brains into young, healthy 'bodies.' Paxton becomes his assistant, horrified by the ethics but fascinated by the science. Everything changes when he meets Valla Dia, a woman of incredible grace. He learns a terrible secret: her beautiful body houses the mind of an ugly old woman, while Valla Dia's own consciousness is imprisoned in a monstrous, manufactured form. The real Valla Dia's original body is lost somewhere in Ras Thavas's vast warehouses of spare parts. Paxton's mission is clear: he must find her true body, orchestrate a complex brain swap, and free the woman he loves, all under the nose of his ruthless and brilliant master.

Why You Should Read It

Beyond the rocket ships and radium pistols, this book has a great, beating heart. The core idea—what makes you, *you*? Is it your mind or your body?—is explored in the most adventurous way possible. Paxton isn't just fighting monsters; he's fighting for someone's very identity. His loyalty to Valla Dia, despite her horrifying exterior, is genuinely touching. Ras Thavas is also a fantastic character. He's not a cackling villain, but a cold, logical genius who sees people as components. Watching Paxton navigate that relationship is a big part of the fun.

Final Verdict

This is a perfect pick for anyone who loves classic, fast-paced adventure with a clever sci-fi twist. If you enjoy the swashbuckling spirit of 'Flash Gordon' or the planetary romance of Burroughs's other books, you'll feel right at home. It's also a great entry point to Barsoom, as you explore it alongside a new character. Think of it as a thrilling escape into a world where the greatest treasure isn't gold, but the chance to be whole again.