What the House Heard

Night of 2026-10-31, 22:00 to 07:00. 3 unexplained events.

Who was where, minute by minute

Occupancy by room, 22:00 to 07:00 Each strip shows how likely TabPFN thinks the room was occupied, minute by minute. Outlined blocks mark presences nobody walked to. 22:00 23:00 00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 Bedroom Hallway Kitchen Living room 02:47 03:12 03:33

TabPFN's occupancy probability (brighter means more likely)   a presence nobody walked to

The evidence

TimeRoomWhy it is strangeReadings
02:47–02:55living roomnobody crossed the hallway first; the bedroom still looked occupiedCO₂ +45.6 ppm, light ≤ 1.4 lux, sound ≤ 53.5 dBA, 7 motion triggers
03:12–03:19kitchennobody crossed the hallway first; the bedroom still looked occupiedCO₂ +99.3 ppm, light ≤ 82.3 lux, sound ≤ 45.3 dBA, 7 motion triggers
03:33hallwaythe front door contact opened and the hallway motion sensor saw nothing—

What the house heard (told by Gemma 4, offline)

You lie in the dark, listening to the rhythmic breathing of your partner beside you. The house is silent until the sensors begin to betray your sanctuary. At 02:47, something moves in the living room despite no one leaving the bedroom. You hear a disturbance, a sound reaching 53.5 dBA, while the humidity climbs to 46.7%. The CO2 rises by 45.6 ppm as seven distinct motion triggers register in the shadows. You stay frozen, eyes wide, as the presence shifts. By 03:12, the kitchen is occupied. Again, no one traveled the hallway, yet the air thickens with a CO2 rise of 99.3 ppm. You hear another noise, peaking at 45.3 dBA, while the humidity reaches 51.7%. The motion triggers repeat, a frantic dance in the kitchen. Then, at 03:33, the front door clicks open. The hallway sensor remains empty, showing nothing passed through the corridor to reach the entrance. Something is inside the house with you, and it just let itself in from the outside without walking past your door.

The boring explanation: A faulty sensor or a small pest is moving through the walls and vents, while a neighbor may have briefly propped the door open.

Fact check passed: 3 clock times and 6 readings in the story all appear in the evidence (attempt 1).