Dan Brown's The Lost Symbol: Cast Dan Brown's The Lost Symbol Adventure, Thriller 9/16/21 – 11/18/21 NBC United States https://www.peacocktv.com/stream-tv/dan-browns-the-lost-symbol GeneralEpisodesCastCharactersGallery Cast See full cast → Ashley Zukerman as Robert Langdon Ashley Zukerman as Robert Langdon Ashley Zukerman as Robert Langdon Valorie Curry as Katherine Eddie Izzard as Peter Sumalee Montano as Agent Sato Rick Gonzalez as Nuñez Alfonso Nuñez Valorie Curry as Katherine Solomon Valorie Curry as Katherine Solomon Eddie Izzard as Peter Solomon Eddie Izzard as Peter Solomon Sumalee Montano as Agent Inoue Sato Sumalee Montano as Agent Inoue Sato Beau Knapp as Mal'akh Beau Knapp as Mal'akh