Season 4

1. Spit and Polish

1972-09-13 • ? min

2. Killer

1972-09-20 • ? min

3. Surveillance

1972-09-27 • ? min

4. Dog Eat Dog

1972-10-04 • ? min

5. Bank Rate

1972-10-11 • ? min

6. On the Third Day

1972-10-18 • ? min

7. The Witness

1972-10-25 • ? min

8. Run for your Money

1972-11-01 • ? min

9. New Broom

1972-11-08 • ? min

10. Paper Chase

1972-11-15 • ? min

11. Welcome to the Club

1972-11-22 • ? min

12. Justice

1972-11-29 • ? min

13. Conversion

1972-12-06 • ? min

14. Needle

1972-12-13 • ? min

15. Execution

1972-12-20 • ? min

16. Time-Table

1973-01-03 • ? min

17. Conspiracy

1973-01-10 • ? min

18. Money for Sale

1973-01-17 • ? min

19. For Love or Money

1973-01-24 • ? min

20. Little Acorns

1973-01-31 • ? min