Foyle's War

Fresh from a stay in America, Foyle encounters MI5 agents Hilda Pierce and Arthur Valentine, who draw him into the hunt for a suspected Russian spy ring. As part of his investigation, Foyle reconnects with Sam, now working for a nuclear scientist and married to political candidate Adam Wainwright.

Looking into the deaths of several high-ranking Russian defectors, Foyle finds ties to the apparent suicide of an unidentified Russian man and the disappearance of a young woman. His search leads him to a government listening station that may not be what it appears.

In this final episode, Foyle is drawn into the bizarre murder of an ex-Nazi defector and leading expert on Soviet intelligence who had been working for MI5. Meanwhile Sam's husband, Adam, is so pre-occupied with his new political job, she worries whether she'll be able to share some big news with him...