Taut cinematic thriller teaser trailer, photorealistic, shot on long lenses with shallow focus. Opening: extreme wide of a sleek night train knifing through moonlit snowfields under a violet-black sky, one lit carriage reflecting on the ice; a cold synth drone under the muffled rhythm of the rails. Cut to: interior, the silent carriage — rows of sleeping passengers, and one man in a gray suit whose eyes are open, watching the seat across the aisle in the black window's reflection; no score, only the hush of the rails and a wristwatch tick. Cut to: extreme close-up — a leather glove slides a folded photograph across the tray table, and the second man, without looking up from his book, turns the photograph face-down; a single sub-bass pulse, a page turning like a gunshot in the silence. Final shot: the train plunges into a tunnel and the carriage lights stutter — in each flash the two men are closer, then both seats stand empty, then one shadow fills the aisle; strobing orchestral stabs synced to the flickers, hard cut to black with a distant train horn wail. Icy cyan and sodium-amber grade, 35mm film grain, volumetric snow light, ultra-detailed, smooth coiled camera movement, trailer pacing, no text, no captions, no watermark.