Britannia Mews (1949)

In Victorian London, young Adelaide is born into luxury, but marries starving artist Henry. His alcoholism and their lack of money lead to many quarrels. During one such fight, Henry slips down a flight of stairs and dies. A neighbor, Mrs. Mounsey, is the only witness, and she blackmails the young widow by threatening to tell the cops that Adelaide killed her husband. Luckily, lawyer Gilbert swoops in to help Adelaide.