Series 4

1. The Moscow Subway Murders

1981-09-25 · 51m

Now promoted to Detective Chief Inspector, Bulman, frustrated with the office-bound nature of the job, is soon challenged by an intriguing murder case.

2. The Loneliness of the Long Distance Copper

1981-10-02 · 52m

A convict makes a daring prison break but leaves a trail to ensure his recapture is handled by the inter-city squad. He has an old score to settle with supervisor Lambie.

3. A Dear Green Place

1981-10-09 · 51m

A routine assignment — escorting a prisoner from Glasgow to London — turns into something altogether different when the woman escapes and her escorts on a merry cross-country chase.

4. Stand and Deliver

1981-10-16 · 50m

The squad investigates a series of armed robberies committed by a gang of modern-day highwaymen.

5. The Flowers of Edinburgh

1981-10-23 · 52m

Bulman and Willis arrest a man carrying an incriminating roll of film. This triggers off an enquiry which takes them to Edinburgh, where they tangle with a gang specialising in political blackmail.

6. Soldiers of Misfortune

1981-10-30 · 51m

The squad investigates a murder and a series of knee-cappings committed by rival groups of mercenaries.