Emma had always known something was wrong long before that night. The signs weren’t dramatic; they were subtle, accumulating slowly like dust in the corners of a room no one bothered to clean. Daniel had started guarding his phone, angling the screen away from her, silencing notifications that once chimed freely. He worked late more often, came home distracted, kissed her cheek with a politeness that felt rehearsed. Their conversations became shallow, logistical rather than intimate.

Emma tried to address it once, carefully, asking if something was bothering him. He brushed her off with practiced ease, accusing her of overthinking, of being tired, of imagining problems where none existed. She didn’t argue. Instead, she watched. She listened. When a cheerful Christmas card arrived that morning from Lily Hammond—Daniel’s coworker, someone he mentioned far too often—something inside Emma clicked into place with painful clarity. Lily’s handwriting was bright and friendly, the message warm in a way that felt invasive. Emma didn’t confront Daniel then. She simply filed the feeling away, the same way she had filed away dozens of other small discomforts over the past year. A week earlier, she had quietly hired a private investigator.