Doorway to Kal-Jmar: A Positronic Book (Hardcover) (ISBN-13: 9781515452485)

A compact Golden Age science fiction adventure in which a veteran explorer risks everything to penetrate the lethal mysteries of the lost city of Kal-Jmar.

Syme Rector is drawn into a perilous expedition toward Kal-Jmar, a hidden city rumored to contain staggering wealth and forgotten technology. Two men have already died attempting to breach its defenses, and the forces guarding its secrets are neither simple nor entirely human. What awaits beyond the barrier is not merely treasure, but a confrontation with intelligence, power, and danger beyond ordinary experience.

Originally published during the great era of mid-century speculative fiction, this tale showcases Damon Knight's crisp pacing, conceptual clarity, and ability to fuse adventure with disciplined imagination. Doorway to Kal-Jmar stands as a reminder that classic science fiction could be swift, sharp, and unsettling without excess - an elegant example of idea-driven storytelling from one of the field's most important figures.

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