Callan (TV series) is run by Colonel Hunter. ("Hunter" is a pseudonym for the current Section Chief, like the C of SIS.) The Section removes those who pose a danger to the "innocent" by persuasion, blackmail, extortion or death. David Callan had been the Section's top operator but he had become too curious about his targets and the rationale for their removal. The Section considered him vulnerable, volatile and dangerous and had laid him off to a dead-end book-keeping job for an ungrateful employer. ABC then commissioned a series of six episodes in 1967. In the first episode Callan rejoins the section in
Callan (TV series) the commercial breaks in the original transmission. This resulted in some awkward visual and audio jump cuts. The subsequent British DVD releases all retain the commercial break captions. The 1974 film was released on DVD separately. Both the 1970 and 1972 series have had Region 4 DVD releases by Umbrella Entertainment. The 1972 series also includes the film. The DVD releases of the movie include an interview, recorded in 2000, with Edward Woodward. Acorn Media released "Callan- Set 1" on 7 July 2009 which includes all 9 episodes from series 3. On 26 January 2010, "Callan- Set 2" was released