Netflix Begins Production on Dan Brown Secret of Secrets Series

Netflix has officially commenced production in Prague on The Secret of Secrets, a new television adaptation based on the 2025 novel by Dan Brown [2]. The project marks the latest expansion of the Robert Langdon franchise, a series that has previously generated five books and multiple film and television iterations over the last two decades [2].

Production and Casting

The series features Morgan Spector as Robert Langdon, a Harvard symbologist, and Rebecca Hall as Katherine Solomon [2]. The production, which officially began in September, is led by showrunner and writer Carlton Cuse, who serves as a co-creator alongside Dan Brown [2]. The ensemble cast includes Cherry Jones, Corey Stoll, Rob Delaney, Abbey Lee, Mamadou Athie, Ben Levi Ross, Anamaria Marinca, Richard Sammel, and Elena Saurel [2].

The narrative centers on Langdon’s efforts to rescue a missing scientist and recover a manuscript that purportedly contains discoveries capable of altering humanity's understanding of the mind [2]. The show is positioned to blend futuristic science with the mystical elements that characterized previous entries in the Langdon series [2].

Franchise Context

This project follows a long history of adaptations for the Robert Langdon character. Tom Hanks portrayed the protagonist in three feature films: The Da Vinci Code (2006), Angels & Demons (2009), and Inferno (2016) [2]. More recently, the character appeared in the 2021 one-season television series The Lost Symbol, which featured Ashley Zukerman as a younger version of the symbologist [2].

While previous installments were based on books published between 2000 and 2017, The Secret of Secrets is derived from the 2025 novel, signaling a shift toward newer source material for the franchise [2]. Netflix has not yet announced a premiere date for the series, and no trailer has been released [2].

What to watch

• Release Date: Monitor Netflix for an official premiere window, as the company has not yet provided a timeline for the series debut [2].
• Marketing Rollout: Look for the release of a first trailer or teaser, which will provide the first look at the series' tone beyond the initial set photos [2].
• Franchise Performance: Observe how the audience reception for this adaptation compares to the 2021 The Lost Symbol series, which also attempted to transition the Langdon property to a television format [2].

The success of this adaptation will depend on whether the shift toward "futuristic science" resonates with the established audience that followed the previous film and book iterations. Whether the series can sustain the global intrigue of the earlier Langdon stories remains the primary uncertainty as production continues in Prague [2].