1939 Finnish film by Jorma Nortimo

1931 film by Jaakko Korhonen

1958 film directed by Armand Lohikoski

Dr. Aitamaa is spending holiday with his family at their summer villa. He accidentally reads a letter that was meant to his wife. The letter is from another man. Aitamaa follows his wife to the city and finds out that she has a lover. Later the wife is found killed and Aitamaa becomes the prime suspect.