Sezon 21
Bölümler
1 Target 15 Şub 1975 2 Seven for a Secret – Never to be Told 22 Şub 1975 3 It's a Gift 1 Mar 1975 4 Black Monday 8 Mar 1975 5 Baubles, Bangles and Beads 15 Mar 1975 6 On a Moody Complaint 22 Mar 1975 7 Looters Ltd 29 Mar 1975 8 The Hired Man 5 Nis 1975 9 For Better, for Worse 12 Nis 1975 10 A Slight Case of Love 19 Nis 1975 11 Pot of Gold 26 Nis 1975 12 Chain of Events 3 May 1975 13 Conspiracy 10 May 1975