blurbflySeconds (1966) directed by John Frankenheimer
Jewel of a film, Hudson is perfect for the part, amazing BW cinematography by James Wong Howe and hints of both The Prisoner and The Twilight Zone. Can't recommend enough.
YouTube
And available from the Internet Archive: https://archive.org/details/seconds.-1966.1080p.-blu-ray.-h-264.-aac-rarbg
Seconds (1966) : John Frankenheimer : Free Download, Borrow, and Streaming : Internet Archive
Seconds 1966 John Frankenheimer