The fitting-room mirror made me look thinner, younger, and strangely happy.
When I stepped away, the better version of me stayed behind and started pounding on the glass.
Mirror horror depends on a simple contract: the reflection should obey. The second sentence breaks that contract.
It follows the house rule: exactly two sentences, with the turn doing more than adding a monster. It changes the reader’s interpretation of the setup.
Covered Mirror
I covered the bedroom mirror because I kept waking up to my reflection standing beside the bed.
Blink First
My reflection smiled before I did, so I smashed the bathroom mirror.
Voice Note
My sister sent a voice note asking me to stop calling her from the basement.
Camera Delay
The hallway camera has a five-second delay, so I watched myself leave the bedroom before I actually opened the door.
Wrong Child
The police found my missing son after six years, and the DNA test says he is unquestionably mine.