A classic short sf novel of 1940, and one that will surely be in the running for next year’s Retro Hugos. Our two protagonists are slans with telepathic superpowers, running the gauntlet of the oppressive government of normal humans, aided only by powerful secret weaponry. It’s obviously a bit of a fable for fans of earlier days; now that geek culture has gone mainstream, I don’t think it resonates as much, and some of the social attitudes of the writing were already out of date by 1940. I suspect it has a good shot at the Retro Hugo, but not with my vote.