Season 4
1972 · 20 episodes
Episodes
1. Spit and Polish
September 13, 1972
2. Killer
September 20, 1972
3. Surveillance
September 27, 1972
4. Dog Eat Dog
October 4, 1972
5. Bank Rate
October 11, 1972
6. On the Third Day
October 18, 1972
7. The Witness
October 25, 1972
8. Run for your Money
November 1, 1972
9. New Broom
November 8, 1972
10. Paper Chase
November 15, 1972
A search is on for a couple who are flooding shops with fake one pound notes. Market stallholder Ben Fisher attempts to get his money back by using local dog track.
11. Welcome to the Club
November 22, 1972
12. Justice
November 29, 1972
13. Conversion
December 6, 1972
14. Needle
December 13, 1972
An unpopular prison warden is run down outside the prison gates. Watt believes he knows which prisoner was behind it but he has to find the driver.
15. Execution
December 20, 1972
16. Time-Table
January 3, 1973
17. Conspiracy
January 10, 1973
18. Money for Sale
January 17, 1973
19. For Love or Money
January 24, 1973
20. Little Acorns
January 31, 1973