In Mr Beast thumbnail style A highly realistic, cinematic YouTube thumbnail for a true crime documentary. The scene is split between an atmospheric, dimly lit, dusty interior of a residential house with a wooden staircase fading into darkness, and a detailed close-up of a weathered, open handwritten diary on a dark wooden table in the foreground. The pages of the diary have faint, unsettling handwritten text and ink stains. A single, dim, warm-yellow flickering light source casts long, dramatic, ominous shadows across the room, suggesting a hidden presence. Desaturated color palette, cold blue-grey tones in the shadows, high contrast, 8k resolution, photorealistic, intense psychological thriller vibe. Space left for text overlay."