PART 1

My granddaughter Chloe stopped coming over in the middle of October. She was sixteen, right at that age where teenagers start pulling away naturally, so at first I tried not to take it personally. But we had always been close. Ever since my husband Arthur passed away six years ago, Chloe had spent every other Friday night at my place.

We would order Chinese food from the good place across town, watch old courtroom dramas, and sit up talking at the kitchen table until my eyelids gave out.

Then, out of nowhere, every Friday brought a new excuse. A study group. A headache. A sleepover with a volleyball teammate whose name I had never heard before.

When November rolled around and she missed three weekends in a row, I called my daughter-in-law Karen to ask if something was wrong between Chloe and me. Karen sighed into the phone and said Chloe told her the house felt creepy. That was the word she used.

I actually laughed. I told Karen that old houses settle, floorboards creak, and the radiator in the hallway clanks like an old boiler every time the heat kicks on. Arthur and I bought that house in 1984. It had drafts, sure, but it was warm and it was safe.

It was the house where I raised my two sons, Mark and Greg. There wasn’t an inch of it that felt dark to me.

The next Sunday, Chloe came by with her father, my son Mark, to drop off my winter tires in the garage. Mark went straight outside to stack them, leaving Chloe standing by the kitchen island with her hands buried deep in her fleece jacket pockets. She wouldn’t sit down. She wouldn’t take off her coat. She barely looked at me when I offered her a slice of lemon bread.

I walked over and put my hand on her arm. I asked her point-blank what was going on. I told her that if I had said something careless or done something to hurt her feelings, she could tell me straight out.

Her chin started trembling. She pulled her phone out of her pocket, tapped the screen a few times, and held it out toward me.

It was a video she had taken during her last stay, back in early October. The screen was pitch-black except for the faint blue outline of the guest room dresser. The timestamp in the corner read 2:14 a.m. In the video, you could hear the faint sound of her breathing, shallow and rapid. Then her hand tilted the camera upward toward the wall vent near the ceiling, right above the antique mirror Arthur had bought for my fiftieth birthday.

Deep inside the dark metal slats of that vent, a tiny, pinpoint red light blinked once, paused, and blinked again.

I stared at the tiny screen and tried to make sense of what I was looking at. I told her it had to be a reflection from the smoke detector out in the hallway. I told her the hallway unit had a little green safety sensor, and maybe the glass on the dresser was bouncing the angle back into the vent.

Chloe pulled her phone back and shook her head. Her face was pale, and she was crying without making a sound. She told me that while she was watching it that night, the light clicked. A sharp, mechanical snap. Then the red dot held steady for twenty seconds before fading out. She had been so terrified she lay frozen under my quilts until sunrise, slipped out the front door before I even made coffee, and walked the mile and a half down to the gas station to wait for her mother to pick her up.

My son Mark came in through the back mudroom right then, wiping grease off his knuckles with a rag. When he saw his daughter crying and me gripping the kitchen counter, he stopped dead in his tracks.

I told him what Chloe had just showed me. Mark didn’t laugh. He didn’t make a joke about old floorboards. His face went dead and rigid. He marched straight down the hallway, took the stairs two at a time, and walked into the guest room.

Chloe stayed frozen in the kitchen, so I followed him up. Mark dragged the heavy oak desk chair across the rug, climbed on top of it, and pulled a pocket screwdriver from his work pants. He unscrewed the two brass screws holding the vent cover to the drywall.

When the metal grille came loose, he reached his hand back into the duct.

I watched his hand come back out. Pinching between his thumb and forefinger was a flat, square black lens no bigger than a coat button. It was taped firmly to the inner sheet metal with industrial electrical tape. Behind it ran a thin, high-grade coaxial feed, disappearing straight down the cavity between the wall studs.