Season 4

01 That'll Be the Day Episode 11st March 1972 Callan is dead. Or so the KGB would have you think. 02 Call Me Sir! Episode 28th March 1972 Lonely is used as bait to retrieve Callan from the KGB. 03 First Refusal Episode 315th March 1972 Callan has become the new Hunter. And his first job is to retrieve a list of British undercover agents. 04 Rules of the Game Episode 422nd March 1972 Callan orders Cross to terrorise an innocent Russian family for political reasons. 05 If He Can, So Could I Episode 529th March 1972 Callan looses his position as Hunter when he goes after the assassin who killed Cross. 06 None of Your Business Episode 65th April 1972 The old Hunter returns and Callan tries to get away. 07 Charlie Says It's Goodbye Episode 712th April 1972 Callan tries to quit the Section when a girl he is seeing takes a dislike to his job. 08 I Never Wanted the Job Episode 819th April 1972 Lonely becomes the unlucky witness to a mob hit. 09 The Carrier Episode 926th April 1972 Callan and Lonley break into a courier's house to find out how he's operating. 10 The Contract Episode 103rd May 1972 Callan substitutes himself for an assassin in order to prevent an assassination. 11 Call Me Enemy (Richmond File 1) Episode 1110th May 1972 Callan debriefs a top enemy defector. 12 Do You Recognise the Woman? (Richmond File 2) Episode 1217th May 1972 Richmond, a top enemy defector, reveals his true purpose. 13 A Man Like Me (Richmond File 3) Episode 1324th April 1972 Callan tracks down Richmond who is trying to leave Britain.