ROBERT SILVERBERG – The Time Hoppers. Doubleday & Co., hardcover, 1967. Avon S372, paperback, October 1968; cover art by Don Punchatz. Belmont Tower, paperback, 1974. Ace, paperback, 1982. Expansion of the story “Hopper,” which first appeared in Infinity Science Fiction, October 1956, and was collected in Next Stop the Stars (Ace Double F-145, 1962).

   Quellen, a minor bureaucrat in the Secretariat of Crime, found his own solution to the overcrowded conditions of the world in the year 2490: a secret illegal hideaway in Africa. But others have resorted to time travel as an answer to their problems, and Quellen is assigned the job of stopping the hoppers without disturbing the stability of the present time.

   There are the usual paradoxes which are brought out, [and] the obvious course of action occurs soon enough, but there is more. Mankind is becoming dehumanized with the intolerable masses of people. Unspeakable crimes and customs are common, sore of a preliminary interlude before the world of Archexecutive Shale in “Pity about Earth” (Report 93), but here they are more forcefully realized. Time travel has this time become the background to an excellent picture of despair.

Rating: ****½

— May 1968.