When investigative journalist Willa Knox receives an email from the clerk of a town she's never heard of-Greyhaven, Colorado-she assumes it's a clerical error. Attached are a utility bill and intake documents bearing her missing sister's name. The records are current. Official. Quietly ordinary. Hannah has been gone for years. Greyhaven insists nothing is wrong. Their files are clean. Their language precise. The case, according to the system, is resolved. As Willa digs deeper, she uncovers a disturbing pattern: people who vanish without closure don't simply disappear. They are reassigned. Reclassified. Smoothed into places where ambiguity becomes administratively inconvenient. Greyhaven is not hiding a crime-it's maintaining continuity. Every question Willa asks triggers polite resistance. Documents change. Timelines drift. Even her own words begin to soften without her permission. Outside the system, the public turns to easier explanations-UFO sightings, strange lights, stories that turn accountability into spectacle. Refusing to let the record close, Willa risks becoming part of the process she's trying to expose. The Last Known Location is a haunting literary thriller about disappearance, bureaucracy, and the quiet violence of systems that value closure over truth. For readers of Severance, Station Eleven, and Annihilation, it explores what happens when grief is filed away-and what it takes to keep someone real once the paperwork says they're gone.