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Set virtually in its entirety in an airborne TWA Constellation (evidently the company agreed to the use of its name in exchange for free advertising), Sky Liner stars Richard Travis as FBI agent Steve Blair. At the beginning of the film, a government courier is murdered by a foreign spy during a transcontinental flight. Blair manages to collar the spy, who is then promptly murdered himself. Now Blair is forced to play detective, sifting out the guilty party (or parties) from the passenger list. Pamela Blake and Rochelle Hudson play the standard "good" and "bad" girls, while the rest of the cast is a film-buff's dream: Steven Geray, Bess Flowers, Jack Mulhall, George Meeker et. al.