1940s noir detective film, black and white, high contrast lighting, rustic urban setting. Rain falls softly on a deserted cobblestone street outside a dimly lit diner. Cigarette smoke drifts through the air. A weathered detective in a trench coat and fedora stands beneath a flickering streetlamp, facing a nervous informant leaning against a brick wall. The atmosphere is tense, mysterious, and cinematic. Dialogue: Informant (quietly): "You shouldn't be asking about the Carter case." Detective (calm, suspicious): "Then why did you call me here?" Informant: "Because someone else is asking questions now." A distant car passes. The detective narrows his eyes. Detective: "Who?" Informant: "The kind of man who doesn't leave witnesses." The streetlamp flickers. The informant glances over his shoulder. Dramatic pause. Detective: "Then we'd better move." Camera slowly pushes in on the detective's face as thunder rumbles in the distance. Film grain, subtle camera shake, authentic 1940s noir cinematography, deep shadows, realistic facial expressions, moody atmosphere, cinematic composition, 4K black-and-white classic detective movie aesthetic.