A murdered man helps his widow bring his killer to justice.

A man involved in a crime (Nolan) kills his key witness by mistake and resigns himself to death. He changes his name so as not to harm his family. The law is not content with his explanation, however.

Swanee River is a 1940 American biopic about Stephen Foster, a songwriter from Pittsburgh who falls in love with the South, marries a Southern girl, then is accused of sympathizing when the Civil War breaks out. Typical of 20th Century Fox biopics of the time, the film is more fictional than factual biography.

Mary stands by Jack after the Depression of 1929 but considers divorce when he again becomes successful by 1935. Bill, who loves Mary, works at keeping them together.