First published 1967
In the stagnant 25th century, bureaucrat Joe Quellen investigates "hoppers" - time travelers wreaking havoc across the timeline. When his unemployed brother-in-law Norman stumbles upon a chance to travel back in time, Joe must race to catch him before he disturbs the fragile social order. As the stakes rise, the two men find themselves tangled in a deadly game of cat and mouse, with the fate of the future hanging in the balance. In this gripping sci-fi thriller, Silverberg blends high-stakes action with a piercing commentary on the human cost of societal control.
Genres: science-fiction, dystopia, time-travel, thriller
Vibes: fast-paced, suspenseful, thought-provoking
Tropes: cat-and-mouse, high-stakes
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