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
Oliver Callan October 2011, Callan was allegedly assaulted by Kerry GAA star Paul Galvin late at night in Kehoe's Pub, Central Dublin. Among witnesses to the alleged incident were a Government Minister, a TD, a senator and several journalists. One witness alleged Galvin called Callan a "fucking cunt". Callan later described how Galvin approached him with "his eyes bulging" and looking "crazy". The incident was investigated by the Garda Síochána. The media speculated on the reason behind the alleged incident, reporting that Callan had recently mimicked Galvin asking Taoiseach Enda Kenny to man-up by giving him a body-wax on radio.' and that