'Blackout' (1950) – Robert S. Baker.

Future Hammer House of Horror legend John Gilling wrote the serviceable script to this creepily crepuscular Brit-Noir about a temporarily blind protagonist Christopher (Maxwell Reed) who quite literally stumbles blindly onto a grisly murder scene, thereby excitingly auguring a lean, well-shot, garotte-tight B-thriller, endowed with a first rate, profoundly engrossing mystery, and the tall, handsomely rugged-looking, twin-fisted lead making for a suitably Stoic, hard-knock Noir hero, and the gripping, circuitously entertaining plot cascades amusingly to a thrill-packed, shadow-steeped, bullet-blastingly boisterous, excitingly staged foot chase at the film's agreeably noisome climax! And it would be greatly remiss to not mention the eye-catchingly vivid use of chiaroscuro lighting effects in the film's doom-laden interiors that rivals the painterly work of world-renowned 'Painting With Light' photographer John Alton.