The Fifth Lock

I never thought a door could hum. But that’s the only word for it—a low, vibrating thrum that started the moment the lock clicked shut. We were eight of us in that apartment, crammed into a flat that smelled of boiled rice and dust, waiting for our work permits in the grimy outskirts of Muscat. The building was a concrete honeycomb, each unit identical, with a tiny kitchen nook, a sunken living area, and one bathroom that always fogged the mirror. Our windows faced a wall of another building, so close you could touch it if you leaned out far enough. The only light that came in was a sickly yellow from the neighbors’ fluorescent bulbs.

That evening, the power had flickered twice, and the air conditioner had given up long ago. We were all in the living room, sweating through our shirts, playing a desultory game of cards on the floor. Aisha, the eldest among us, had just come out of the shower, her hair dripping onto her shoulders as she retreated to the bedroom to change. She shut the door behind her—not slammed, just a soft click—and I remember thinking how odd it was that she closed it at all, given the heat. But we were engaged in a heated argument about whether the jack or the queen was higher, and I paid it no mind.

Ten minutes later, Farid, the youngest, stretched and announced he wanted to buy something from the corner shop. He sauntered to the door, twisted the knob, and froze. ‘It’s locked,’ he said, his voice thin. Aisha, now dressed in a loose kaftan, looked up from the cards. ‘Did you lock it?’ she asked. ‘No,’ he replied, jiggling the handle. ‘Maybe it’s just stuck.’ He rattled it harder. The sound of metal against metal echoed in the room.

We all rose, the game forgotten. I tried the knob myself—it turned freely, but the door wouldn’t budge. The lock, a deadbolt with a small brass keyhole, appeared normal. But when I put my ear to the door, I heard that hum. It was faint, like a distant generator, but it was there. ‘Maybe the landlord replaced the lock and gave us the wrong key,’ Samir suggested. We had a single key that hung on a nail by the door. It was still there, untouched. I slid it in, but it wouldn’t turn. It was as if the lock had changed its mind about what key it wanted.

We tried everything—pushing, pulling, shoulder-barging the cheap wooden frame. The door didn’t so much as flex. Panic started to seep in. Farid was pounding his fists against the wood now, his voice cracking. ‘Let us out! There’s someone out there!’ But there was no response from the hallway, only the relentless hum.

Then Aisha, who had been silent, spoke. ‘Did anyone see me close the bedroom door?’ She pointed to the corridor leading to the bedroom. The door she had closed earlier was now ajar, swinging slightly as if from a breeze. None of us had opened it. I swallowed hard. ‘Maybe you didn’t close it properly,’ I said, but I knew that was a lie. I had seen the solid click.

We decided to check the windows. The only window in the living room was sealed shut with paint, and when we pried at it, it gave way to a view of the concrete wall. The gap between the buildings was a mere two feet, and the wall itself was blank—no fire escape, no ledges. Our only exit was the door.

Hours passed. The hum grew louder, more insistent, as if the door itself was breathing. We took turns trying to pick the lock with a bobby pin, a paperclip, even a piece of wire from a hanger. Nothing worked. The keyhole seemed to mock us, its brass gleam steady.

It was around midnight when Samir, who had been sitting with his back to the door, suddenly jumped up. ‘Listen!’ he hissed. We pressed our ears to the wood. The humming had shifted—it had a rhythm now, almost like a heartbeat. And beneath it, we heard something else: a faint, shuffling sound, like feet dragging across concrete, coming closer and closer down the hallway outside.

We backed away, our hearts racing. ‘Who’s there?’ Aisha called out. No answer. The shuffling stopped just outside the door. Then there was a knock—three slow, deliberate knocks. But the sound wasn’t on the door in front of us. It came from behind us. We whirled around. The bedroom door was now fully open, and from the darkness inside, we heard the same three knocks, echoing as if from a vast space.

I don’t know when we realized we weren’t alone. The room seemed to shrink, the walls pressing in. Farid started to cry. Aisha gripped my arm so hard her nails left marks. The knocking began again, this time syncing with the hum, a terrible duet that vibrated in our teeth.

Suddenly, the bedroom door slammed shut with a force that shook the floor. A split second later, the front door swung open, as if whatever had been holding it had simply let go. It wasn’t an invitation—it was an expulsion. We spilled into the hallway, gasping, and fled down the stairs without looking back. When we finally gathered outside in the parking lot, trembling under the streetlights, we counted ourselves. Eight. We were all here.

But as we stood there, catching our breath, one of us noticed something. On the front of the building, the window to our apartment was dark. And in that darkness, a silhouette stood, perfectly still, watching us. The fifth lock, the one we had never seen, had claimed its own. We never spoke of that night, and all of us moved out within a week. But I still hear that hum sometimes, in the quiet of my own home. And I know, with chilling certainty, that the door is still there, waiting for someone to turn the wrong key.