Fear Is the Key In the right hands, fear is the deadliest weapon of all. A deep-sea salvage expert enacts an elaborate plan to infiltrate and take revenge on a criminal organization that dealt him a foul misdeed. Details Casts Videos Galleries Posters Title Fear Is the Key Release Date 1972-12-26 Runtime 01 Hours 43 Minutes Genres Action Thriller Production Companies Paramount Pictures, Anglo-EMI Production Countries United Kingdom Barry Newman... John Talbot... Suzy Kendall... Sarah Ruthven... John Vernon... Vyland... Dolph Sweet... Jablonsky... Ben Kingsley... Royale... Ray McAnally... Ruthven... Peter Marinker... Larry... Roland Brand... Deputy... Tony Anholt... FBI Agent... Elliott Sullivan... Judge Mollison... John Alderson... Tanner (uncredited)... James Berwick... (uncredited)... Hal Galili... Cibatti (uncredited)... Ernie Heldman... Bartender (uncredited)... Unboxing (Featurette) Original Trailer (Trailer) Original Size (1920x1080) Original Size (1280x720) Original Size (1799x1011) Original Size (1337x752) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1250x1875) Original Size (2000x3000) Original Size (979x1469) Original Size (1296x1920) Original Size (2000x3000) Original Size (720x1080) Original Size (2000x3000)