Explore the fantastical world of Mars with this vintage science fiction novel, "The Mastermind of Mars" by Edgar Rice Burroughs. Published in 1963 by Ace Books, this paperback edition features a striking cover illustration by Roy Krenkel. Travel to a distant planet and immerse yourself in action, adventure, and intrigue. Follow the story of the mastermind Ras Thavas as he attempts to restore his rightful place in society and uncover the secrets of Martian civilization. This book is a must-read for fans of the science fiction genre.