The Good Humor Man (1950)

Biff Jones is a driversalesman for the Good Humor icecream company He hopes to marry his girl Margie who works as a secretary for Stuart Nagel an insurance investigator Margie wont marry Biff though because she is the sole support of her kid brother Johnny Biff gets involved with Bonnie a young woman he tries to rescue from gangsters But Biffs attempts to help her only get him accused of murder When the police refuse to believe his story its up to Biff and Johnny to prove Biffs innocence and solve the crime