This 1937 British sci-fi crime film, also known as Libson Clipper Mystery, was directed by Robert Stevenson and starred John Loder, Anna Lee and Francis L. Sullivan. It was based on the novel Sky Steward by Ken Attiwill. A woman who can clear an innocent man of the charge of murder is pursued by gangsters onto a luxurious transatlantic flying boat. Anna Lee is a stowaway on a futuristic airliner. The plane looks like it just flew off the cover of a vintage scifi magazine. It even has outdoor observation decks so you can go outside while the plane is in flight!