The Devil's Cargo.

John Joyce arrives in Sacramento with his sister, Martha, and aunt to become the editor of a newspaper. He is determined to clear the town of the low-down mining camp types who are flaunting their freewheeling ways. When Joyce meets Faro Sampson, he falls in love, believing that she is the daughter of a minister. Actually she's the daughter of the man who runs a gambling den, "Square Deal" Sampson.