The Invisible Menace is a 1938 American mystery film directed by John Farrow and starring Boris Karloff. It was also known as Without Warning.

Plot

An army private and his new bride are trying to honeymoon on an island occupied by the military and a murderer.

Cast

Production

The film was based on a play Without Warning by Ralph Spencer Zink which had a short run on Broadway in May 1937. The New York Times called it a "competent detective play." Warner Bros bought the film rights and assigned Boris Karloff to star and John Farrow to direct. Jane Wyman was originally meant to play the female lead. Wyman was replaced by Marie Wilson. Filming started August 1937.

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