I was sixteen when my grandmother died, leaving me her old house on the edge of the marsh. The house smelled of damp wood and dried herbs, and every corner held a memory I hadn’t asked for. The first night I slept there, I woke at 3:17 AM to the sound of something scraping against the windowpane. I thought it was a branch, but the nearest tree was a good twenty feet away.
I lay still, listening. The scraping stopped, replaced by a low, rhythmic hum, like a far-off engine. I convinced myself it was the wind through the reeds, and I rolled over to face the wall. That’s when I saw it—a silhouette in the doorway of my room. It was tall, impossibly thin, with shoulders that sloped too sharply. I assumed it was my uncle, who had stayed to help with the funeral, checking on me. I closed my eyes and pretended to sleep, hoping he’d leave.
But the figure didn’t leave. It moved closer, its steps making no sound on the creaking floorboards. I felt it stop at the foot of my bed, then heard a soft, wet whisper, like someone trying to speak with a mouth full of water. The voice said, ‘The lantern is out. You must relight it.’ My blood turned cold. That wasn’t my uncle’s voice.
I squeezed my eyes shut, praying for it to go away, but I felt the mattress depress as something sat on the edge of the bed. A cold, damp hand touched my shoulder. The whisper came again, right next to my ear: ‘You owe a debt. The lamp on the pier. Light it.’
I opened my eyes. The figure was gone, but the room was darker than before, and the air smelled of brine and rotting wood. I didn’t sleep the rest of the night. At dawn, I went to the pier my grandmother had always warned me about. There, on a rusted post, was an old brass lantern, crusted with salt and cobwebs. It was empty, its glass cracked. I didn’t know what it meant, but I felt a pull, a niggling compulsion to fill it with oil and light it.
For three nights, the whisper came back. Each time it was more insistent, and each time the figure got closer. On the third night, it pressed something into my hand: a tarnished key with a green stone set in the bow. I recognized it from my grandmother’s jewelry box. When I asked my uncle about it, he turned pale and muttered that she had never let anyone touch that key. ‘She said it was for the marsh keeper,’ he said, and refused to say more.
I finally went out to the pier with a can of oil and matches. As I unscrewed the lantern, I saw something glinting inside: a folded piece of paper, yellowed with age. It was a handwritten note from my grandmother, dated forty years ago. It said: ‘If you’re reading this, I’m gone. My husband made a bargain to save himself from the marsh fever. The keeper wanted his lantern lit every year, or it would take someone. He never told me who. I’ve kept it as long as I could, but I’m too old. You are the last of us. You must decide.’
I lit the lantern that night, and the marsh went quiet. The whisper stopped. For weeks, nothing disturbed the house. I thought I had fulfilled the debt. But last week, I found a new note pinned to my pillow, written in spidery handwriting that wasn’t my grandmother’s. It said: ‘Good. You’ve paid his debt. Now you owe yours. See you at 3:17.’
I’ve been sleeping with the lights on since then, but I know it’s only a matter of time. The lantern is still burning on the pier, but I see its light flicker in my window at night. And every time I close my eyes, I feel that cold hand on my shoulder, and the whisper returns: ‘You owe a debt. The lantern is out. Relight it.’