C2Searchlight finds them
Dim night → blazing cone
Dark → sliding bars of white → dark
C1

Black-and-white noir close-up of a man in his forties in a loosened tie hiding beside a window with venetian blinds in a dark apartment, high-contrast film look, locked camera. 0–2s: his face almost black, a faint edge of streetlight on his cheek. 2–4s: car headlights appear in the street below. 4–6s: bars of hard white light from the blinds slide across the ceiling, down the wall and over his eyes. 6–8s: the light slides away and he stays frozen in the dark, holding his breath. Throughout: cigarette smoke hanging in the air, silver-grey tones, fixed camera.
Give moving light a route: across the ceiling, down the wall, over the eyes. The route is the timing.
C2Dim night → blazing cone
C3Soft carriage light → strobing bands → dark reflections
C4Sodium orange → red/blue → orange