Season 1

  • Episode 1. The Secret Adversary: Part 1

    Agatha Christie's crime-fighting duo, Tommy and Tuppence Beresford, solve mysteries and search for enemy spies in 1950s Britain. They have an encounter on a train with an agitated woman who suddenly disappears and never returns to her seat.

  • Episode 2. The Secret Adversary: Part 2

    Agatha Christie's crime-fighting duo, Tommy and Tuppence Beresford, solve mysteries and search for enemy spies in 1950s Britain. Tommy and Tuppence go undercover; he as a member of Brown's gang and she as a maid to a potential suspect.

  • Episode 3. The Secret Adversary: Part 3

    Agatha Christie's crime-fighting duo, Tommy and Tuppence Beresford, solve mysteries and search for enemy spies in 1950s Britain. The Beresfords' search for Jane Finn comes to a close as they finally uncover the identity of Mr. Brown.

  • Episode 4. N Or M?: Part 1

    Agatha Christie's crime-fighting duo, Tommy and Tuppence Beresford, solve mysteries and search for enemy spies in 1950s Britain. Tommy is sent on a secret mission to find the identity of a Soviet spy; Tuppence refuses to be left behind.

  • Episode 5. N Or M?: Part 2

    Agatha Christie's crime-fighting duo, Tommy and Tuppence Beresford, solve mysteries and search for enemy spies in 1950s Britain. There is a murder at the local Veterans Ball, as Tommy and Tuppence continue their search for the Soviet spy.

  • Episode 6. N Or M?: Part 3

    Agatha Christie's crime-fighting duo, Tommy and Tuppence Beresford, solve mysteries and search for enemy spies in 1950s Britain. The couple have to come up with the most ambitious plan yet in order to protect the lives of British citizens.