The Puppet Masters is a science fiction novel by Robert A. Heinlein. Set in a future where Earth is under attack by parasitic aliens, the story follows a secret government agency tasked with fighting the invaders. The aliens attach themselves to human hosts, taking control of their bodies and minds. The Puppet Masters explores themes of invasion, control, and the fight for freedom. With its fast-paced action and intriguing premise, this book is a thrilling addition to the alien abduction science fiction genre.