The Eternity Ring
16 July, 1945. A military convoy arrives in the New Mexico desert carrying Professor Michael Fraser, a British nuclear scientist, and his wife, Helen Fraser. Another scientist, Max Hoffman, is waiting for them, and he takes them into a bunker where they watch the explosion of the first nuclear bomb together.
One year later, a cypher clerk, Aleksei Gorin, steals secrets from the Soviet Embassy in London. He is chased by NKVD agents but manages to escape.
Foyle’s investigation into the death of a nameless Russian leads to a mysterious military facility run by a respected Colonel with an impeccable war record.
But as Foyle makes enquiries, he realizes the dead Russian was a spy with dangerous connections to British intelligence. Sam does her best to help husband, Adam, during his by-election campaign, but can’t help putting her foot in it...
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...