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

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

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

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

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.

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.

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

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.

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