aka Roadhouse Girl
British noir about a young mechanic who gets a job at a garage in the English countryside. He falls in love with the owner's wife, and when the husband catches the two of them together, the mechanic kills the husband. Although the mechanic is acquitted, his problems are only beginning.
The plot reminded me a bit of The Postman Always Rings Twice. I love the bleak atmosphere of these post-war British B movies, and this one evidently has a strong reputation among them.