The Co-Ordinator calls a press conference to announce the defection of a celebrated Russian author, but Palfrey urges caution. He suspects a trap, especially after the KGB starts to pressure for the author's return.

Blair is recruited by another department to investigate a suspected Soviet agent – a Czech-born woman with whom he once had an affair. But Palfrey believes the department may have hidden motives for requesting Blair's aid.

A former British agent who defected to the Soviet Union makes an unannounced return, threatening to embarrass both countries. Under instructions to silence him, Palfrey decides to up the stakes.

A contact at the Soviet embassy informs the Co-Ordinator that one of her agents is 'playing a double game'. Since she doesn't hold this agent in high regard, the Co-Ordinator tells Palfrey to look into it—but he suspects a set-up.

The trouble with being a spy, is sometimes you come to wonder who's doing the spying and who is the spied upon. Sequel to the 'Mr Palfrey of Westminster' series, aired as part of 'Storyboard'.