1. The Fortress

British Intelligence officer Jim Nicholson battles to undertake a vital mission to rescue, or kill, a captured agent.

Starring Edward de Souza.

The continued exploits of British Intelligence Officer Jim Nicholson in the world of Cold War espionage.

Robert Barr's six-part thriller.

Jim Nicholson .... Edward de Souza
Paul O'Donnell .... Geoffrey Frederick
The Commander .... Gerald Cross
Colonel Doyle .... Frederick Treves
Sara Gale .... Kate Binchy
Lieutenant Farrell .... Geoffrey Collins
Sgt Kelly .... Derek Seaton

Robert Barr is best remembered for his work on BBC TV's 'Z-Cars' and 'Softly Softly'.

Before his TV work, Barr was picked as one of the very few correspondents who were to travel with General Eisenhower during the Second World War.

Producer: Charles Maxwell

First broadcast on BBC Radio 4 in May 1973.