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Dan Brown's The Lost Symbol · S1 · E6

Diophantine Pseudonym

  • TV-14
  • Oct 21, 2021
  • 47 min
  • 6.6

Mal'akh pressures Langdon and Peter to decipher the clues. Katherine, Nuñez and Sato try to regroup.

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About this episode

Mal'akh pressures Langdon and Peter to decipher the clues. Katherine, Nuñez and Sato try to regroup.

Season 1

10 episodes

  1. 1As Above, So Below

    47 minSep 16, 2021★ 6.9

    Young professor Robert Langdon is pulled into a complex mystery when his mentor is kidnapped.

  2. 2The Araf

    47 minSep 23, 2021★ 6.3

    Robert and Katherine get help from an old friend while trying to decipher the most recent clue.

  3. 3Murmuration

    43 minSep 30, 2021★ 6.3

    With the CIA on their trail, Robert and Katherine turn to Nuñez for help; Sato interrogates Bellamy.

  4. 4L'Enfant Orientation

    45 minOct 7, 2021★ 6.5

    Forced to split up, Langdon follows the next clue while Katherine joins Sato to find her father.

  5. 5Melencolia I

    44 minOct 14, 2021★ 6.4

    Langdon must reunite with Katherine and team up with Sato while Nuñez follows a hunch.

  6. 6Diophantine Pseudonym

    47 minOct 21, 2021★ 6.6Now viewing

    Mal'akh pressures Langdon and Peter to decipher the clues. Katherine, Nuñez and Sato try to regroup.

  7. 7Noögenesis

    52 minOct 28, 2021★ 6.1

    Mal'akh sheds light on Zach's final days in prison. Langdon and Katherine face their shared past.

  8. 8Cascade

    43 minNov 4, 2021★ 6.6

    Katherine and Langdon persuade Isabel to protect herself. Peter reconnects with Leviathan members.

  9. 9Order Eight

    41 minNov 11, 2021★ 6.8

    Langdon, Katherine, Nuñez and Peter partner with Sato and the CIA to spring a trap for Mal'akh.

  10. 10Resonance

    46 minNov 18, 2021★ 6.1

    As Mal'akh's plan culminates, Peter and Langdon wrestle over the sacrifice needed to save Katherine.