Something has been dropped into New York Harbor, and no one can identify it in time. The instruments stall, the divers see nothing but mud, and every reliable method begins to slip as the deadline closes in. The pressure builds not because of what is known, but because no one can prove what it isn’t. With the city hanging in the balance, the question becomes how far you’re willing to go when certainty refuses to appear.
As the clock ticks down, the problem shifts from analysis to decision. Every option carries risk, and even inaction becomes a choice with consequences. The solution that emerges is not technological, but human—a gamble placed on instinct at the worst possible moment. What follows is not just a test of systems, but of judgment, and whether a single call can carry the weight of millions.
James Blish was one of the most versatile voices in science fiction, publishing widely in magazines such as Astounding Science Fiction and Galaxy. He is best known for the Cities in Flight series and for his sharp, idea-driven short fiction, often blending science with social insight. Blish also wrote the Star Trek episode adaptations and contributed critical essays under the name William Atheling Jr., where he examined the craft of science fiction itself. “One-Shot” reflects his ability to build tension from decision-making under pressure, turning a technical problem into a human one.
