When people tear open the walls of old houses, they sometimes find more than wiring and insulation. A vintage doll clutching a note that read 'stabbing was my choice of death for them.' A hidden camera embedded in a staircase, aimed at the bedroom above. A note tucked deep in a cabinet: 'Don't look under the floor.' These discoveries are real. The explanations—when they exist at all—rarely make them less disturbing.