Netflix Begins Filming Dan Brown Series The Secret of Secrets

Netflix has officially begun production in Prague on its untitled series based on Dan Brown’s 2025 novel, The Secret of Secrets, releasing the first official image of lead actors Morgan Spector and Rebecca Hall on set [2, 3]. The project marks the latest expansion of a franchise that has generated approximately $2.24 billion in global box office revenue through three previous film adaptations [3].

Production and Franchise Context

The series, which Netflix ordered straight to series in May 2025, features Morgan Spector as Harvard symbologist Robert Langdon, a role previously portrayed by Tom Hanks in three feature films and by Ashley Zukerman in the 2021 television series The Lost Symbol [3, 4]. Production is currently active across Prague’s historic center, including locations in Josefov and near the Municipal House, which served as the backdrop for the first official promotional image released by the streamer [4]. Unlike many international productions that use the Czech capital as a stand-in for other cities, the series is explicitly set in Prague, mirroring the novel’s reliance on local landmarks like the Charles Bridge and the Klementinum [4].

Showrunner Carlton Cuse, whose previous credits include Lost and Jack Ryan, is co-creating the series alongside Dan Brown [2, 3]. The narrative follows Langdon as he attempts to recover a missing scientist’s manuscript, a plot that the production claims will blend futuristic science with mystical lore [3, 4]. The ensemble cast includes Cherry Jones, Corey Stoll, Rob Delaney, and Abbey Lee, with Netflix recently confirming five additional recurring roles, including Mamadou Athie and Ben Levi Ross [2, 3].

Market Significance

The adaptation arrives as Netflix continues to leverage established intellectual property to drive subscriber engagement. Dan Brown’s novels have collectively sold more than 250 million copies across 56 languages, providing a significant built-in audience for the new series [3]. While the Tom Hanks-led films—The Da Vinci Code, Angels & Demons, and Inferno—established a high commercial bar for the franchise, this series represents the first time the property has been adapted for a streaming-first model with an eight-hour format [3, 4].

What to watch

• Official Title: Netflix has yet to announce a formal title for the series, despite production being well underway [3].
• Premiere Date: No release window has been provided; the streamer has stated it is too soon to speculate on a premiere date [2].
• Local Impact: While Netflix has not announced local Czech cast members, the scale of the Prague-based shoot suggests continued reliance on regional production facilities and talent [4].

The success of this series will test whether the Robert Langdon franchise can maintain its global appeal in a serialized television format. With production slated to continue in central Prague over the coming weeks, the primary question remains how the show will differentiate its "futuristic science" approach from the historical mystery tropes that defined the previous films [3, 4].