Barlow - Series 4
1 - Vindication
Air Date: January 8, 1975
2 - Away
Air Date: January 15, 1975
3 - Bullion
Air Date: January 22, 1975
4 - Rat Run
Air Date: January 29, 1975
5 - Asylum
Air Date: February 5, 1975
6 - Contessa
Air Date: February 12, 1975
7 - Nemesis
Air Date: February 19, 1975
8 - Protection
Air Date: February 26, 1975