A Repeating Chirp Near the Bedroom Ceiling

Case overview

Devon wakes at 2:13 a.m. to a thin chirp near the hall ceiling. His daughter Maya says she heard the same sound the night before, but Devon slept through it. By breakfast, the house is quiet again. A timer could have gone off. So could something in a room neither of them has checked lately. Devon does not want to spend the morning chasing every noise in the house, but the sound was too precise to ignore. He asks Maya to point to where she heard it. Together, they try to remember when it repeats and what the household knows about that spot. They still need to locate the source and find out what it is before deciding what the chirp means.