Edward Woodward starred as Callan, a brooding, conscience-stricken assassin for a shadowy British intelligence service so secret it doesn't have a name. The series aired on UK television for 4 seasons from 1967 through 1972. (Woodward later starred as a not dissimilar character in The Equalizer.)
With the Cold War grinding on, agents from the East and West engage in elaborate deceptions, both sides seeking temporary advantage in an endless struggle. No one plays this game better than Callan. His sharp eyes, steely will, and steady hand with a gun make him a valuable asset to his superior, called Hunter (William Squire). But Callan knows his usefulness could end at any moment--especially with the younger, ruthlessly ambitious agent Cross (Patrick Mower) eager to advance.
Note: The first two seasons of Callan have apparently been lost. Set One of the series includes episodes from the third season, and Set Two episodes from the fourth and final season.
Original air dates: 04/08/1970 to 06/24/1970
Original air dates: 03/01/1972 to 05/24/1972