Sezon 4
Bölümler
1 Emergency 1 Eyl 1974 2 Secret Meetings 8 Eyl 1974 3 Investigations 15 Eyl 1974 4 Happy Anniversary 22 Eyl 1974 5 Partings 29 Eyl 1974 6 Loneliness 6 Eki 1974 7 Hit And Miss 13 Eki 1974 8 Public Concern 20 Eki 1974 9 The Race 27 Eki 1974 10 Saturday 3 Kas 1974 11 The Guilt Behind the Gingerbread 10 Kas 1974 12 A Bad Mistake 17 Kas 1974 13 The Fall Guy 24 Kas 1974 14 The Crucial Vote 1 Ara 1974