| Director | Dick Clement |
|---|
Fabienne, a young French-born British schoolteacher marries and heads to Bucharest in the Eastern Bloc for their honeymoon. Her husband is arrested by secret police and soon turns out to have been detained by Soviet intelligence as a spy. She intends to head to Moscow to try and help him, but instead is drugged and sent on a plane back to England by a seemingly suspicious waiter.
Back in London she lobbies her uncle, the Shadow Foreign Secretary and his friend the head of British Intelligence, to help get her husband back. He explains that they have deliberately arrested her husband in order to have a bargaining chip to exchange for a top Soviet agent who has recently been unmasked by the British. Unbeknownst to Fabienne her husband, a corrupt businessman, is in league with the Soviet intelligence and has married her on their instructions. The exchange in Germany goes wrong, however, when during the handover the Soviet spy - laden down with capitalist consumer goods from the West - sinks through the ice and drowns.
As the British now have nobody to exchange for her husband, Fabienne sets out to capture an enemy agent on her own initiative. She manages to trap a man in a trench coat who has been following her all day, only for him to prove to be an incompetent British agent ordered to trail her for her own security by his chiefs. When Andrej the Bucharest waiter remerges, having been caught rummaging through her room and demanding she hand over a microfilm that he inserted into her luggage when he had her drugged in Bucharest, she decides he will be the ideal person to exchange. However, before she can take action they both end up being abducted by enemy agents, only escaping in the Scottish countryside. He reveals to her that he is not really a spy, but he makes money smuggling manuscripts of books by Soviet dissidents to the West.
Because the Soviets want to get their hands on him, they plant evidence in his hotel room indicating that he is one of their spies. Special Branch arrest him and agree to a new prisoner exchange, over Fabienne's protests. The final exchange on a lake on the East German border descends into chaos and a motor boat chase.