Aircraft are being shot down by a large black plane with a big "X" painted on the wing. The chief suspects are invited for the weekend to an old dark mansion.

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Main Cast: John Carroll, Lona Andre, John Elliott, Henry Hall, Leon Ames, Willard Kent, Pat Somerset, Reed Howes, Wheeler Oakman, Gaston Glass

Director: Elmer Clifton

Writer: Charles R. Condon

Editor: Carl Himm

Cinematographers: Arthur Reed, James Diamond

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