Air date: 1973-02-07

Runtime: 50 min

Barlow must find a young girl who has disappeared from London Airport.

Air date: 1973-02-14

Runtime: 50 min

Fishing for a villain in Amsterdam, Barlow searches for the appropriate bait.

Air date: 1973-02-21

Runtime: 50 min

Eddie Doyle is serving a life sentence for murder, but friends in The Potteries think the police may have moved too fast.

Air date: 1973-02-28

Runtime: 50 min

A girl has been murdered in the West Country, and routine methods have failed to find her killer. What's needed is something different...

Air date: 1973-03-07

Runtime: 50 min

Barlow investigates a racket using car ferries to export stolen vehicles.

Air date: 1973-03-14

Runtime: 50 min

When a voice from the past brings Barlow information about a crime, he has to balance his new responsibilities at the Home Office against his detective's judgment.

Air date: 1973-03-21

Runtime: 50 min

The policeman look and sound British. But when Barlow follows the trail of a city swindler as far as Rhodesia, he finds them surprisingly unfriendly.

Air date: 1973-03-28

Runtime: 50 min

Barlow finds that Signor Rizzi is interested in something more sinister then good trade relations.

Air date: 1973-04-04

Runtime: 50 min

The Rock of Gibraltar proves stony ground when Barlow and Rees start 'digging' for treasure. Their hunt for £750,000 worth of stolen and forged securities leads them to all the Rock's attractions - and one of the attractions leads Rees into temptation.

Air date: 1973-04-11

Runtime: 50 min

Barlow's relationship with Fenton is never easy - and it is stretched to the limit when Fenton receives and extraordinary confession.