Reality is narrowing—coming to an unexpected end.
 
A brilliant physicist discovers that probability itself is collapsing—that the universe is converging toward a single, irreversible outcome. Her attempt to escape that fate fractures more than space and time. It creates something else: a sentient force born of superposition, an entity that exists everywhere at once and fears only one thing—being resolved.
 
As reality tightens, the physicist and her sister race ahead of a universe running out of paths, pursued by an entity that cannot survive their repair. With every path closing behind them, they must reconcile a relationship fractured years earlier, while that same force works to ensure they never get the chance.
 
Superposition is a literary science-fiction novel about doubt, devotion, and the cost of becoming real, where the end of the universe depends not on invention, but on whether anyone is willing to stand and choose.