Shadowed

Shadowed is a 1946 film directed by John Sturges. It is also known as The Gloved Hand.

Fred keeps the package and realizes it belongs to another member in the same golf club, Tony Montague, when he happens to overhear the man talking to his wife, Edna. Tony finds Freds marked golf ball and suspects that a man with the initials F.J. Has taken the package. Before leaving, Tony raises his voice on the golf course, warning F.J. to go to the police with the package, threatening to kill him and his whole family if he did.Fred goes back to his family, and opens the package, finding the address to a print shop with the plates. He doesnt call the police, remembering Tonys threat. When Tony and Edna get back to their boss, Lefty, they are chastized for losing the package and sent to recover it. ........

Source: Wikipedia