Season
- Season 4 1972-03-01
- Season 3 1970-04-08
- Season 2 1969-01-08
- Season 1 1967-02-06
- Season 0 1981-02-07
Episode
- Episode 1: Red Knight, White Knight
- Episode 2: The Most Promising Girl of Her Year
- Episode 3: You're Under Starter's Orders
- Episode 4: Little Bits and Pieces of Love
- Episode 5: Let's Kill Everybody
- Episode 6: Heir Apparent
- Episode 7: Land of Light and Peace
- Episode 8: Blackmailers Should Be Discouraged
- Episode 9: Death of a Friend
- Episode 10: Jack-on-Top
- Episode 11: Once a Big Man, Always a Big Man
- Episode 12: Running Dog
- Episode 13: The Worst Soldier I Ever Saw
- Episode 14: Nice People Die at Home
- Episode 15: Death of a Hunter
Callan Season 2 Once a Big Man, Always a Big Man
Callan is the title of a British television series set in the murky world of espionage. Originally produced by ABC Weekend Television and later Thames Television, it was aired on the ITV network over four seasons spread out between 1967 and 1972. The series starred Edward Woodward as David Callan, a reluctant professional killer for a shadowy branch of the British Government's intelligence services known as 'the Section'.
