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