A moody, cinematic still from a neo-noir film. The scene is set at night on a rain-slicked, dimly lit cobblestone street in an old European city, perhaps Bucharest. A solitary figure, a private detective, stands in the middle of the street, back to the viewer, looking towards a decaying, grand Art Deco building. The detective wears a classic trench coat and fedora, silhouetted against the glow of a distant streetlamp. Fog or mist hangs low, blurring the edges of the frame. The color palette is dominated by deep blues, blacks, and desaturated grays, with pops of warm, muted yellow from the streetlights reflecting on the wet pavement. The atmosphere is one of isolation, mystery, and quiet tension, evoking a sense of foreboding. Composition should be balanced, with the detective as the central, yet enigmatic, element. The overall aesthetic should be that of a high-quality, professional book cover, with a focus on atmosphere and narrative suggestion. Aspect ratio 1:1.