11x1 - The Man Who Killed Songbirds

April 5, 1977

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

11x2 - Rage

April 12, 1977

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.

11x3 - Guilt

April 19, 1977

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.

11x5 - Error Of Judgement

May 3, 1977

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.

11x6 - Scavengers

May 10, 1977

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.

11x7 - Fall Of Wiskers Castle

May 17, 1977

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?

11x8 - Rip Off

May 24, 1977

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.

11x9 - Quarry

May 31, 1977

11x10 - Attack

June 14, 1977

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.

11x11 - Skeletons

June 21, 1977

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.

11x12 - Domestic

June 28, 1977

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.

11x13 - Juvenile

July 5, 1977