Darkness was slowly engulfing the damp-soaked forest of Przemrocz. On the indistinct path, just inside the dishevelled gate, twigs crackled under the boots of Zosia, Matthew and Igor. The air smelled as if of moss and something more intangible, something akin to the dust of old books and rooms that had been closed for years. - 'I promise that if we find even one bat, I'll run away first,' muttered Zosia, pulling her hood over her head. Matthew laughed quietly, trying to reassure both himself and her. Igor walked behind, dragging a heavy rucksack behind him. Inside buzzed a torch and a few other things that might come in handy, such as a bottle of water, a notebook and... an old map, printed by Matthew. The sanatorium had stood abandoned for decades. The stories that circulated about it were varied: about doctors who disappeared, windows that closed by themselves, and children who never left the building. Nobody took them seriously, but today all three of them, armed with courage and curiosity, decided to check it out. As the wicket creaked open, Igor closed his eyes and counted to three. "It's just the wind," he repeated in his mind. But no breeze opened the door to the building. They were half-closed, as if someone was inviting them in. They entered the lobby, where the light of torches danced on the cracked walls and mosaic floor. Everything looked different from the pictures on the internet - more disturbing, more real. Matthew walked over to the notice board, where yellowed sheets of paper hung. He attached a light to them. "MENTION YOUR DREAMS AT THE LAST WORLD". - he read aloud. - What is that supposed to mean? - whispered Zosia, glancing at the windows, behind which the wind was quietly singing. They dispersed down the corridors. In the old canteen, the floor crackled strangely underfoot, and torn garlands hung from the ceiling. There was something coming from there that sounded like rustling - quiet, slow, as if someone was sliding across the linoleum barefoot. Suddenly Igor stopped in front of the door to the boiler room. It was slightly ajar, and warmth was beaming from behind it. - 'I can see the light,' he said, pointing to the crack. Everyone held their breath. A quiet sound came from inside - something between a whisper and a sigh. Without a word, Zosia grabbed Matthew by the sleeve. Matthew raised his torch, ready to shine it on anything that moved. Igor gently pushed open the door. Instead of emptiness, a long, dark corridor illuminated by an array of small lights appeared. There were strange footsteps across the floor, along the walls, as if someone was dragging something heavy, leaving wet streaks behind. At the end of the corridor, a silhouette shimmered - a tall, lean figure whose face could not be seen through the twilight. The figure slowly turned its head towards them. At the same instant, the lights went out and the forest outside the windows fell silent as if on command....