A cinematic, high-contrast thriller book cover artwork, square 1024x1024. The scene features a shadowy, silhouetted figure standing in a dimly lit, narrow urban alleyway at night, surrounded by distorted reflections of red and blue emergency strobe lights on wet cobblestones. A single, sharp, shattered glass shard lies in the foreground, reflecting a mysterious, unfocused eye. The color palette is dominated by deep midnight blues, charcoal grays, and piercing crimson red highlights. The mood is tense, claustrophobic, and suspenseful. Professional noir aesthetic, sharp focus on textures, dramatic chiaroscuro lighting, volumetric fog, no text, no letters, no words, no logos.