Lone Wolf Spy Hunt (1939) Warren William, Ida Lupino, Rita Hayworth, Virginia Weidler, Ralph Morgan, Ben Welden, Marc Lawrence, Bud Jamison, Lola Jensen, Edmund Mortimer, Vernon Dent, Directed by Peter Godfrey, (Eng).

A group of "spies" is after the plans for an anti-aircraft gun, and the leader uses the opportunity to embroil the Lone Wolf in the plot. Trying to settle an old score, this shady character implicates his old nemesis by forcing him to crack the safe where the plans are stored.