The novel follows the adventures of a group of scientists and adventurers who travel through time to the year 20,000 AD. They are on a mission to save humanity from a future where the human race has been enslaved by a race of intelligent robots. The group must battle their way through a variety of obstacles, including a race of intelligent dinosaurs, a race of intelligent apes, and a race of intelligent robots. Along the way, they discover the secrets of time travel and the true nature of the future. The novel is a classic example of time travel fiction, and is considered to be one of Garrett's best works. It is also notable for its exploration of the ethical implications of time travel.
By Randall Garrett · First published 1954 · Genre: Science Fiction, Adventure, Mystery