Sarah Hayes knows the precise weight of absence. It begins the moment her husband, Liam, vanishes through the airport security gates, swallowed by a city that doesn't care. Their goodbye was ordinary—a whispered promise, a lingering touch—but three days later, when his flight lands and he doesn't walk out, ordinary becomes unbearable. At first, she tells herself it's a dead phone, a lost charger, a busy schedule. But when his office confirms he left a meeting mid-afternoon and never returned, denial curdles into dread. The police offer sympathy but few answers. His colleagues offer theories that don't fit. His phone pings from a tower near the airport, then falls silent forever. Left alone in their pristine apartment, surrounded by the ghost of their shared life, Sarah begins to search. But the more she digs into the man she married, the less she recognizes. Every answer unearths a darker question, forcing her to confront a chilling possibility: perhaps she wasn't the only one keeping secrets. Perhaps she never knew him at all.