Sezon 4
Bölümler
1 That'll Be the Day 1 Mar 1972 
2 Call Me Sir! 8 Mar 1972 
3 First Refusal 15 Mar 1972 
4 Rules of the Game 22 Mar 1972 
5 If He Can, So Could I 29 Mar 1972 
6 None of Your Business 5 Nis 1972 
7 Charlie Says It's Goodbye 12 Nis 1972 
8 I Never Wanted the Job 19 Nis 1972 
9 The Carrier 26 Nis 1972 
10 The Contract 3 May 1972 
11 Call Me Enemy (Richmond File 1) 10 May 1972 
12 Do You Recognise the Woman? (Richmond File 2) 17 May 1972 
13 A Man Like Me (Richmond File 3) 24 Nis 1972