Source: PeacockArticle continues below advertisementIs Dan Brown’s ‘The Lost Symbol’ a sequel to ‘Angels & Demons?’ Is Dan Brown’s ‘The Lost Symbol’ a sequel to ‘Angels & Demons?’ The Forrest Gump actor will not reprise his role in Peacock’s Lost Symbol show, prompting some fans to wonder how it will fit into the timeline of the aforementioned film adaptations. In the big screen adaptations of three of those novels, Tom Hanks played Robert Langdon. The Da Vinci Code, Angels & Demons, Inferno, and Origin are the first three books in the Robert Langdon series. The ten-episode series is based on Dan Brown’s 2009 novel of the same name. Peacock will compete with the highly anticipated drama The Lost Symbol, despite the fact that many new shows in the fall 2021 lineup will air on network television.