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 (film) But Callan refuses to act until he knows exactly why Schneider has been marked for death... The only actors to reprise their television roles in the film were Woodward, Russell Hunter who played Lonely and Clifford Rose who played Snell. Apart from the three, all the other recurring characters were played by different actors and actresses. The script by James Mitchell is based on his original TV pilot "A Magnum for Schneider" and the novelization thereof, "Red File for Callan", although only the novel is listed in the film's credits (as "A Red File for Callan"). "Callan" was the first