Cloudburst(1951)

He had murdered once! NOW he was ready to strike again... and no one could catch him but HIMSELF!

Canadian World War II veteran John Graham works in London as a code breaker. Tragedy strikes when his pregnant wife, Carol, is accidentally run over by two crooks who are speeding away from the scene of a murder. Haunted, grieving, and thirsting for revenge, Graham sets out to find the two fugitive murderers.