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Watch The Lone Wolf Spy Hunt online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.

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.