Every surviving episode of the long-running ITV crime drama series starring Alfred Burke as private investigator Frank Marker.
The show was notable for its refusal to glamorise Frank's profession.
Unlike the protagonists of other TV investigative dramas, Frank's workload consists primarily of run-of-the-mill fare such as divorces, missing persons and bankruptcies.
This is not to say there is no interest in his job. Frank is drawn into the stories of ordinary people's lives and is often the only man who can help them escape from trouble.