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

Dan Brown's The Lost Symbol Season 1 Episodes...

• s01e01 - As Above, So Below
• s01e02 - The Araf
• s01e03 - Murmuration
• s01e04 - L'Enfant Orientation
• s01e05 - Melencolia I
• s01e06 - Diophantine Pseudonym
• s01e07 - Noögenesis
• s01e08 - Cascade
• s01e09 - Order Eight
• s01e10 - Resonance

Dan Brown's The Lost Symbol Show Summary

Famed Harvard symbologist Robert Langdon must solve a series of deadly puzzles to save his kidnapped mentor and thwart a chilling global conspiracy.