The Crooked Web is a 1955 crime film noir directed by Nathan Juran and starring Frank Lovejoy, Mari Blanchard and Richard Denning.
Plot
Stan Fabian runs a drive-in restaurant with girlfriend Joanie Daniel, whose brother Frank turns up for a visit. Joanie has declined to marry Stan because he's strapped for cash, but Frank tempts him with a proposition, mentioning that he and a partner hid a stash of gold in Germany during the war.
Stan accepts an offer to help recover the gold for a cut of the loot. What he doesn't know is that Joanie and Frank are actually undercover cops. A rich businessman's son was apparently killed by Stan during a deal gone wrong, but the German police are unable to extradite him to charge him with a crime.
Frank pretends to shoot his partner, using blanks. He secretly meets with Berlin chief of police Koenig, pretending to be looking for the gold. Stan fears a double-cross, but confesses his wartime murder to Joanie, and is shocked to be placed under arrest.