I spend my days teaching strangers how to read their own homes. I never thought my house would be the one telling on my husband.

A heating bill that kept spiking every Wednesday afternoon led me home early one freezing day. I went to fix a thermostat. I found something else entirely.

She swore every long afternoon was spent at her mother's kitchen table. The tablet she left behind kept a quieter, more honest record.

He stuttered since childhood, so the weekly therapy appointments made sense. Then I matched the dates on our bank statement to a map.

He started tracking his sleep to fix his snoring. One quiet Tuesday morning, I pressed play on the night's recording out of plain curiosity.

I woke at 4 a.m. certain of something I had no proof of. By breakfast I had the proof, and I wished I'd never gone looking.