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
Colm Callan Colm Callan Colm Patrick Callan (also known as Colum) (6 January 1923 – 30 May 2010) was an Irish rugby player who played as a second-row forward for Lansdowne Football Club and was part of the Irish rugby team from 1947 to 1949, winning 10 caps. Callan was born in Port, Co Louth Ireland and educated at Castleknock College. Callan played with the Irish team that won their first Grand Slam in the 1948 Five Nations Championship, in all 4 matches. He also was a member of the 1949 Five Nations Championship winning team. He won his first cap on