Cry Terror (1958)

Cry Terror! (also known as The Third Rail) is a 1958 American crime thriller film starring James Mason, Inger Stevens, and Rod Steiger. The story, written and directed by Andrew L. Stone, revolves around a criminal mastermind named Paul Hoplin (played by Rod Steiger). Hoplin devises a sophisticated blackmail scheme, intending to extort a $500,000 ransom by threatening to blow up a crowded airline using an explosive device unwittingly designed by electronics expert Jim Molner (played by James Mason).