 The film was Fanchon Royer's first production for her new company, Fanchon Royer Features, Inc. "Film Daily" reported that noted "G-Man" Melvin Purvis was offered a role in this film, but turned it down.The story concerns commercial aircraft being shot down by a large black fighter aircraft with a large "X" painted on the wing.The chief suspects may be the very pilots that have been gathered together to solve the mystery, and are invited for the weekend to an old dark mansion.