Agatha Christie spy drama. Husband and wife team Tommy and Tuppence Beresford are amateur sleuths who foil plots in 1950s Cold War Britain.
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Episode 1 of 6: The Secret Adversary, Part One
It's 1952, and Tommy and Tuppence Beresford, an ordinary married couple, are thrust into a web of international espionage after a chance encounter on a return train from Paris.