ANOTHER FREQUENCY

Sérgio survives an industrial accident that should have been nothing more than a frightening memory. He returns home, goes back to work, and tries to resume the life he has always known.

But something is wrong.

The apartment is the same. His job is the same. His memories are intact. Yet small details no longer fit: a familiar object in the wrong place, a photograph that feels subtly different, a neighbor who seems to belong to another version of the building. Even more disturbing, Elena—the woman who has shared his life for eleven years—knows that something has changed. She recognizes the man who came home, but something about him is unmistakably not the same.

At first, Sérgio records the differences as coincidences. Then he begins to investigate.

What he discovers leads him into the strange territory of quantum superposition, decoherence, and the many-worlds interpretation of reality. With the help of Antônio, an aging maintenance technician whose knowledge of physics is self-taught but unexpectedly profound, Sérgio begins to consider an impossible possibility: that the accident did not merely change his life. It may have changed the reality in which he is living.

But if he has crossed from one reality to another, can the crossing be reversed?

And what happens when he discovers that he is not the only one?

Another Frequency is a literary science-fiction novel about identity, love, reality, and the fragile boundary between what science can explain and what remains beyond our understanding. It is a story about what happens when the world looks exactly the same—except for the things that matter most.