Prague is preparing for another high-profile international production as Netflix moves forward with plans to film a series adaptation of Dan Brown’s latest Robert Langdon novel, The Secret of Secrets, in the Czech capital this year. While no official start date has been announced, industry sources and local reports indicate that the production is expected to arrive in the coming months.
The project adds to an already strong 2026 production slate in Prague, which includes the third season of Apple TV+’s Foundation and Martin Scorsese’s new feature What Happens at Night, set to begin filming this week. Together, the trio of major international titles underscores the Czech capital’s continued appeal as both a backdrop and a production hub.
Based on Brown’s novel The Secret of Secrets, which was released last year, the Netflix series returns to the world of Harvard symbologist Robert Langdon. Unlike earlier screen adaptations such as The Da Vinci Code, Angels & Demons, and Inferno, which starred Tom Hanks, the upcoming series is expected to introduce a new actor in the lead role.
Casting details for The Secret of Secrets have not yet been made public, though a certain Australian actor, fresh off a pair of major series roles, is currently in Prague working on a mystery project.
A Langdon story rooted in Prague
In Brown’s latest installment, released last September, Langdon finds himself navigating the streets and landmarks of Prague, including the area around Old Town Square, the Klementinum complex, and locations near Folimanka. Although some critics argued that the novel’s use of Prague’s history was uneven, the story is explicitly set in the Czech capital, making on-location filming a logical choice.
The series is being developed by Carlton Cuse, known for his work on Lost, and Brown is attached as executive producer and co-writer. The project marks the sixth Langdon novel and will become the fifth screen adaptation of Brown’s work. It is also the first time an adaptation of his work has been put into development in such close proximity to a novel’s publication.
Production details remain tightly controlled. As is typical for Brown adaptations and other high-budget international projects shooting in Prague, the series is reportedly operating under a working title. No official filming schedule has been released, and Netflix has yet to confirm specific dates or locations.
The decision to shoot in Prague reflects a broader industry trend toward authenticity in international productions. While the city has frequently doubled for other European capitals and historical settings, The Secret of Secrets is expected to present Prague as itself, rather than as a stand-in. That distinction is significant for local crews and service companies, as productions that foreground the city’s identity often rely more heavily on recognizable exteriors and central locations.
Spending by large-scale streaming productions in the Czech Republic has routinely reached into the hundreds of millions of Czech crowns, benefiting local service providers, studios, and post-production facilities. Although no budget figures have been disclosed for the Langdon series, it is expected to rank among the more substantial international projects of the year.
A packed year for Prague film production
The Langdon adaptation joins a slate that is already one of the busiest in recent memory for Prague’s audiovisual sector. Apple TV+’s Foundation is currently filming its third season in the Czech capital, with a production schedule that includes more than 100 shooting days. The science fiction series has previously utilized both Prague’s studio infrastructure and location work across the country.
Meanwhile, Martin Scorsese’s What Happens at Night is set to begin principal photography in Prague this week. The film, produced for Apple TV+, stars Leonardo DiCaprio and Jennifer Lawrence and is based on the novel by Peter Cameron. Local filming is expected to last several weeks before production moves to New York.
The convergence of these productions follows recent changes to the Czech audiovisual incentives system, which industry leaders say have improved the country’s competitiveness in attracting foreign shoots. Studio executives and representatives of the Czech Audiovisual Fund have previously pointed to the updated framework as a key factor in securing large-scale streaming projects.
In addition to these headline titles, other international series and features are in various stages of production across Prague and regional locations. The cumulative effect is a year in which demand for experienced crews, studio space, and location management is expected to remain high.
For local industry professionals, the arrival of The Secret of Secrets represents not only another major credit but also a project that places Prague at the center of a global narrative. For international audiences, it signals a return to Brown’s puzzle-driven storytelling, this time set explicitly in the Czech capital’s historic core.
No release date has been announced for the series, and Netflix has not yet revealed casting or a production timeline. However, with cameras expected to roll in the coming months, Prague is once again poised to serve as both stage and subject for one of the streaming sector’s most closely watched literary adaptations.
Lead photo: Tom Hanks as Robert Langdon in Inferno (2016) / Prague’s night streets courtesy Depositphotos.com. Montage: The Prague Reporter
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Dan Brown visited Prague last year