Air date: 1977-04-05

Runtime: 50 min

Young Colin's route home from school lies across a grubby parkland. Hiding in the bushes is a man with sweets... and a knife.

Air date: 1977-04-12

Runtime: 50 min

It's not like Arthur Scarsdale to be violent. He's normally a peaceful little villain, but in the Newtown nick it takes three policemen to hold him down - and all Bowker did was offer him a cup of tea.

Air date: 1977-04-19

Runtime: 50 min

Quilley was at school with Chris Murray and knows he wouldn't hurt a soul. So when Chris half murders a man and pleads guilty Quilley wants to know why.

Air date: 1977-04-26

Runtime: 50 min

Crime Squad from Cardiff want Inspector Moffat to lodge a prisoner overnight in the Newtown cells - and no-one must know about it. But someone has to know, even if it's only another policeman.

Air date: 1977-05-03

Runtime: 50 min

Lorry hi-jacks: too many, too well-planned and executed. Braithwaite goes 'under cover' as a lorry driver with a shady past. He's out in the cold - and vulnerable.

Air date: 1977-05-10

Runtime: 50 min

Digging a deep hole in the sand by the light of the moon isn't the sort of behaviour you'd expect from a debt collector. Not even such a strange one as Clarrie Enwright.

Air date: 1977-05-17

Runtime: 50 min

It's his first day as a sergeant and Alec Quilley's hung over. It's his first job as a sergeant, and it requires a bit of gentle persuasion. But how can you be gently persuasive to a double-barrelled sawn-off shotgun?

Air date: 1977-05-24

Runtime: 50 min

DC Bowker and Jack Crawford have met before. Their relationship is very simple: one way or another Bowker is going to nail Crawford, unless Crawford can nail Bowker first.

Air date: 1977-05-31

Runtime: 50 min

Air date: 1977-06-14

Runtime: 50 min

Coppers are fair game and copper-baiting is a good sport - unless the copper you pick on happens to be an expert in unarmed combat. In that case the game's called mayhem.

Air date: 1977-06-21

Runtime: 50 min

Excavating for a swimming pool a young couple come across an old trunk buried in their garden. For the police it means old files, old memories and old wounds must all be re-opened.

Air date: 1977-06-28

Runtime: 50 min

Unlike his brother Terry, who's just a flat-footed scuffer, Graham Moffat is all set to wheeler-dealer his way into big business. Trouble is - the way it looks to Terry - brother Graham is all set to wheeler-dealer his way into crime.

Air date: 1977-07-05

Runtime: 50 min