You could make a strong case for the late John Frankenheimer being the most unappreciated American film director of all time simply by mentioning his two astonishing 1960s movies 'The Manchurian Candidate' and 'Seconds'. Frankenheimer made many others movies both good and not so good, but these two are amazing pieces of work and rarely get the praise they deserve. 'Seconds' is one of the greatest thrillers ever made. Intelligent, complex, and extremely depressing. It doesn't talk down to its audience and perhaps this is the reason why it was a box office flop and is still all but ignored today. Rock Hudson isn't an actor with much credibility to most film fans but he is brilliant in this film in easily his most powerful and believable performance ever. The rest of the supporting cast are excellent, especially the underrated character actors John Randolph ('Serpico'), Will Geer (TV's 'The Waltons') and Jeff Corey ('Mickey One'). 'Seconds' is a minor masterpiece. A very disturbing story with an unforgettable climax. Highly recommended!