The Knocking Code

I’ve known Marnie since I was three, when she first appeared at the foot of my crib, a small girl in a damp, gray dress, her hair a tangle of river weeds. Most kids would scream, but she just looked at me with eyes the color of drowned violets, and I felt a strange calm. Over the years, she became my secret, my invisible friend. She’d sit on the windowsill while I did homework, her bare feet never quite touching the floor, and she’d hum a tune that sounded like a music box left out in the rain. We had our own language, a series of knocks on the wall. I’d tap out a pattern on the plaster by my bed, and she’d answer from the far corner, a faint, echoing reply that only I could hear. It was our game, our bond.

But something changed the summer I turned fifteen. The air in my room grew thick, like the pressure before a storm. Marnie started to look… wrong. Her gray dress seemed more tattered, her skin paler, almost translucent, and her eyes, once gentle, now held a frantic gleam. The first sign was when my best friend, Chloe, came over. We were sitting on my bed, laughing at a video, when Marnie appeared in the doorway, her face twisted in a silent snarl. She pointed at Chloe with a shaking finger, and I felt a chill that had nothing to do with the air conditioning. Chloe shivered. ‘Did you feel that?’ she asked. I lied and said it was just the wind.

That night, the knocking changed. I tapped out our old greeting on the wall, but the reply came back erratic, stuttering, like a heartbeat gone wrong. When I got up to get a glass of water, I found Marnie in the hallway, her head tilted at an impossible angle, her lips moving in a silent whisper. She was trying to tell me something, but I couldn’t understand. The next morning, I found my books scattered on the floor, my carefully arranged pencil cup tipped over, and scratch marks on the wallpaper, as if something had tried to claw its way out.

It got worse. My other friend, Leo, came over to work on a project. As he reached for my laptop, Marnie shrieked from the corner, a sound so sharp it felt like glass in my ears. She threw my favorite mug against the wall, shattering it inches from Leo’s head. He stumbled back, his face pale. ‘Dude, your room is haunted,’ he whispered. I tried to laugh it off, but I couldn’t deny the terror in his eyes. That night, I woke to a cold hand on my cheek. Marnie was leaning over me, her face inches from mine. ‘Don’t let them touch your things,’ she hissed, her voice the sound of gravel grinding. ‘They want to take you away.’ I told myself it was a nightmare, but in the morning, my room was a wreck—drawers pulled out, clothes strewn, my journal open to a page I’d never written. It simply said: ‘STAY.’

Our knocking code started failing. I’d tap out the old rhythm, but she wouldn’t answer. I’d tap again, more desperate, and finally, from the darkest corner, I’d hear a single, hollow thud. When I looked at her, she was pacing like a caged animal, her bare feet leaving no prints on the carpet. She’d stop only when I sat perfectly still, then she’d fade away, only to return if I so much as shifted my weight. I began to feel like a prisoner in my own room, watched by a ghost who had turned from friend to warden.

The breaking point came when I tried to leave. I had planned to spend the night at Chloe’s house, a small act of rebellion. As I packed my bag, Marnie appeared in my mirror, her reflection a dark mirror of my own. She pressed her hands against the glass, and I saw her mouth form the word ‘No.’ Then the lights flickered, and the mirror cracked from corner to corner, a spiderweb of fractures spreading like roots. I screamed, and she was gone. But when I looked again, the crack was gone too, and the room was silent. I knew then that whatever she was, she wasn’t my friend anymore. She was something that wanted to keep me here, locked in this room, with her, forever. And I had no idea why.