Two convicts manage to escape from Alcatraz (they won't tell us how: "trade secrets") and make it to a lighthouse island just off the coast, where they hold 3 men and a woman (Granville) hostage. Luckily for them, the soldier they kill turns out to be a Nazi spy, as they discover when his compatriots arrive in a boat -- just what the 2 convicts need to escape, if they're willing to deal with the Nazis and let them escape with maps of the San Francisco municipal/military works.
Exciting action, some moments of genuine humor, and likeable, human characters make this propaganda pill an easy one to swallow.
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