This episode concerns tough-guy mercenary Pitt, who's heading back to Heathrow from an African dictatorship country where he's been handsomely paid off for his services.
But, he has a a nasty surprise waiting for him when he lands - his former gang members are waiting, seeking revenge for him double-crossing them before he left for Africa.
They know he has a sizable amount of money on him, and are looking to settle a score - while relieving him of his loot.
This is certainly one of the better episodes from this unusual (and often hit-and-miss series) - the story building steadily towards a unexpected climax.
Fans of classic ITC shows of the 60s will no-doubt recognize Edward Brayshaw as Pitt - usually cast as a 'baddie', and seemingly playing to type here. We also get to see Rudolph Walker in the early scenes - best known of course from controversial race-relations 70s sitcom 'Love Thy Neighbour' - and later on to find yet more fame as a regular in the long-running BBC soap 'EastEnders'.
It was fascinating too to see the empty Stamford Bridge football ground of Chelsea FC featuring prominently in the second half - though a pity that the imposing and impressive three-tier new main stand is largely out of shot!
This episode makes for quite a taut and gritty little thriller, and it's a pity that more episodes of this short-lived series weren't perhaps quite as well-conceived as this one.