Aired: 2/7/1973
Barlow must find a young girl who has disappeared from London Airport.
Aired: 2/14/1973
Fishing for a villain in Amsterdam, Barlow searches for the appropriate bait.
Aired: 2/21/1973
Eddie Doyle is serving a life sentence for murder, but friends in The Potteries think the police may have moved too fast.
Aired: 2/28/1973
A girl has been murdered in the West Country, and routine methods have failed to find her killer. What's needed is something different...
Aired: 3/7/1973
Barlow investigates a racket using car ferries to export stolen vehicles.
Aired: 3/14/1973
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.
Aired: 3/21/1973
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.
Aired: 3/28/1973
Barlow finds that Signor Rizzi is interested in something more sinister then good trade relations.
Aired: 4/4/1973
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.
Aired: 4/11/1973
Barlow's relationship with Fenton is never easy - and it is stretched to the limit when Fenton receives and extraordinary confession.