A strange warning on a blackboard pulls three students toward a locked room and a question they may not be able to ignore.
The college corridors were almost empty when Adam left his evening lecture. The fluorescent lights hummed overhead, one of them stuttering in the distance, and every step he took came back to him twice, sharp and lonely against the stone walls. He should have been thinking about the exam waiting for him in two days, but his mind kept drifting anyway. He passed Room 213, as he had hundreds of times before, and then stopped so suddenly that his bag slid against his hip.
Something had been written across the blackboard beside the door. Not the usual half-erased formulas or lecture notes, but a fresh line in hurried, slanted cursive: Don't open the door after midnight. Never.
Adam stared at it. The words looked wrong there, too deliberate to be a joke and too hurried to feel rehearsed. Beside the message lay a key, tied with a thin red thread, as if someone had left it on purpose and wanted it noticed. He leaned closer to the narrow glass panel in the door. The room beyond was only a black square, thick with darkness, with nothing visible except his own faint reflection.
Footsteps sounded behind him. Magda and Olek, who had been coming from the student club meeting, slowed when they saw him standing there. Their expressions changed the moment they read the board.
"What is this?" Magda asked, lowering her voice without seeming to notice.
Adam wordlessly pointed at the message.
Olek gave a short, uncertain laugh, the kind people use when they want to dismiss something and fail. "Probably a prank. Someone's trying to scare first-years."
But even he did not sound convinced.
At the far end of the corridor, something clattered softly. Not loud enough to be called a warning, only enough to make all three of them go still. The college seemed to draw a breath around them. Magda glanced at the door, then at the key in Adam's hand.
"Open it," she said, almost in a whisper. "If someone wanted us to find this, maybe we're supposed to look inside."
Adam wrapped his fingers around the key. The metal was cold enough to sting. For a second he thought he heard something shift on the other side of the door, a slow drag in the dark, as if someone or something had just moved closer.
Then he slid the key into the lock.