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
K. Callan K. Callan K. Callan (born Katherine Elizabeth Borman; 1936) is an American author and actress known for playing Clark Kent's mother Martha in the ABC television series "". Born in Dallas, Texas she first appeared on television in an episode of "Route 66" that happened to be shooting in Dallas. She resumed her on-camera career in 1970, having guest-starring roles on "One Day at a Time", "St. Elsewhere", "Carnivàle", "JAG", "Coach" and "King of the Hill". She played a key role in the Emmy Award-winning episode "Cousin Liz" of "All in the Family" and portrayed the mother of April Stevens