The 11:17 PM Knock

I live alone in an apartment building with paper-thin walls. Every night at

exactly 11:17 PM, I would hear a soft knock on my door. No one was

ever there. I installed a door camera. Nothing showed up, no person,

no movement. Still, the knock continued every night. Last week,

I finally opened the door immediately after the knock. The hallway was empty,

but taped to my door was a sticky note. It read: Too slow again.

Freaked out, I reviewed my footage frame by frame. That is when

I saw it. At 11:16 PM, my door opened slightly. From the inside.