1. Big Deal

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. 23 January 1974. 50 min

Barlow's involvement in the security arrangements for a number of big open-air pop festivals appears to be routine. But when things go wrong at least one chief constable is glad he's there.

2. Snatch

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. 30 January 1974. 50 min

A prominent Jewish industrialist appears to have been kidnapped. Is it a hoax? Or is it the action of Arab guerillas - in which case what exactly do they want?

3. Plunder

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. 6 February 1974. 50 min

Even on holiday in Italy Barlow manages to combine business with pleasure - which accounts for his knowledge of and interest in Etruscan art.

4. Hit

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. 13 February 1974. 50 min

Barlow is instructed to make discreet enquiries into the undesirable company being kept by a politician. In the process he meets up with an old adversary and decides, for once, to go it alone.

5. Corruption

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. 20 February 1974. 50 min

A series of apparently unconnected explosions reveals a web of intrigue. Barlow's enquiries touch a raw nerve in high places and he takes a big personal risk.

7. Snookered

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. 6 March 1974. 50 min

A mysterious call from Special Branch leads Barlow into a cloak-and-dagger world which is, as Fenton warns him, ""shadowy, full of intrigue - and violent"".

8. Sect

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. 13 March 1974. 50 min

The Home Office have received a number of complaints about an apparently harmless religious sect. Barlow's team investigate, with tragic results.