Directed by Frank McDonald and released by Paramount Pictures, Submarine Alert is a brisk, 66-minute wartime spy thriller produced by Pine-Thomas Productions. Set on the U.S. West Coast during World War II, the film blends radio technology, Nazi espionage, and military urgency into a compact narrative designed to stir patriotism and vigilance.
Plot Summary
When a top American scientist working on a shortwave transmitter prototype is murdered by Nazi agents, the FBI suspects a spy ring is leaking shipping routes to enemy submarines. To catch the culprits, they orchestrate a covert operation: firing top radio engineers and tracking who gets recruited by the enemy.
Lewis J. “Lee” Deerhold (Richard Arlen), one such engineer, is approached by suspicious figures and drawn into a web of intrigue. With help from Ann Patterson (Wendy Barrie), a government agent posing as a secretary, Deerhold uncovers a plot to transmit secret convoy data to a Japanese submarine lurking offshore. The climax involves a race against time to stop the transmission and prevent a deadly ambush.
Cast Highlights
- Richard Arlen as Lee Deerhold
- Wendy Barrie as Ann Patterson
- Nils Asther as Dr. Arthur Huneker
- Roger Pryor as G.B. Fleming
- Marc Lawrence, Abner Biberman, and Ralph Sanford in supporting roles
Behind the Scenes Trivia
- Produced by William H. Pine and William C. Thomas, known for their efficient, low-budget action films dubbed “Dollar Bills.”
- The film was part of a wave of wartime propaganda thrillers, emphasizing vigilance against domestic sabotage.
- Richard Arlen, a silent-era star, transitioned into B-movie hero roles during the 1940s.
- The film’s use of radio technology as a plot device reflects real fears about signal interception and coded transmissions during WWII.
- Though modest in scope, the film was praised for its tight pacing and topical urgency.
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