This is really just an FYI that this 1966 American spy "film" is actually a compilation of the first four ~25' episodes of a total of seventeen of the on-season series, "Blue Light, that aired on ABC-TV from January 12 to May 18, 1966:
101, Jan. 12, 1966, The Last Man
102, Jan. 19, 1966 Target, David March
103, Jan. 26, 1966 The Fortress Below
104, Feb. 02, 1966 The Weapon Within
The negative critics really offer no legitimate criticism in view of how FAR worse much of today's stuff is.