Kessler is a television series produced by the BBC in 1981, starring Clifford Rose in the title role. The six-part serial is a sequel to the Second World War drama series Secret Army, set in contemporary times.

Secret Army is a British television drama made by the BBC and the Belgian national broadcaster BRT created by Gerard Glaister. It tells the story of a fictional Belgian resistance movement in German-occupied Belgium during the Second World War, an escape line dedicated to returning Allied airmen, usually shot down by the Luftwaffe, to Great Britain. It was made in the UK and Belgium and three series were broadcast on BBC1 between 7 September 1977 and 15 December 1979.