Season 4 Episodes
1. Spit and Polish
September 13th, 1972
2. Killer
September 20th, 1972
3. Surveillance
September 27th, 1972
4. Dog Eat Dog
October 4th, 1972
5. Bank Rate
October 11th, 1972
6. On the Third Day
October 18th, 1972
7. The Witness
October 25th, 1972
8. Run for your Money
November 1st, 1972
9. New Broom
November 8th, 1972
10. Paper Chase
November 15th, 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 22nd, 1972
12. Justice
November 29th, 1972
13. Conversion
December 6th, 1972
14. Needle
December 13th, 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 20th, 1972
16. Time-Table
January 3rd, 1973
17. Conspiracy
January 10th, 1973
18. Money for Sale
January 17th, 1973
19. For Love or Money
January 24th, 1973
20. Little Acorns
January 31st, 1973
