The Puppet Masters
By Robert A. Heinlein
A rollicking anti-communist screed from the height of the Red Scare has the titular slugs or “titans” infiltrating America from one of Saturn’s moons, or more directly and proximately from “behind the Curtain.” It’s a wild, nude roller-coaster ride of a novel, and perhaps the first to feature aliens as body-snatchers. With or without the politics that enemy within would become a major theme in ’50s SF.
A right-winger of the libertarian school, Heinlein was an exact contemporary and political soulmate of Ayn Rand. Meaning he wasn’t just against commies, but against weak, ineffective, “bureaucratic” government at home as well. The price of freedom isn’t just eternal vigilance but eternal violence, ferocity, and hate in the biological war of all against all. Sam and Mary won’t just beat the slugs on the battlefield but in the bedroom as well because they are breeders. Long live the race!
Lending support to the maxim that it’s easier to imagine the end of the world than the end of capitalism, even in regions where the slugs have taken over the economy still functions the same way, with the same division of labour and even bankers (as “silly” as it seems) staying on to provide the essential function of maintaining liquidity in the financial system. Suggesting that the slugs, if they aren’t stopped, may be on their way to the same ironic fate as our mechanical inheritors in Čapek’s R.U.R. They’re about to get really bored, to the point where they can only despair at the pointlessness of it all.