Out of the Fog (1941).

Ida Lupino and John Garfield in
Out of the Fog

When racketeer John Garfield leans on fishing boat owner Thomas Mitchell and his friend for protection money and romances Mitchell's daughter (Ida Lupino), the men begin to think of murder. The film is based on the play "The Gentle People" by Irwin Shaw (The Young Lions; Rich Man, Poor Man).