Untitled Robert Langdon Series (The Secret of Secrets)

Netflix is moving forward with its series adaptation of Dan Brown's 2025 bestseller The Secret of Secrets, with Morgan Spector confirmed to lead as Harvard symbologist Robert Langdon and Rebecca Hall in talks for the female lead role of Katherine Solomon. The project comes from co-creators Dan Brown and Carlton Cuse, with Cuse serving as showrunner and writer. Genre-Arts is producing alongside executive producers Emma Forman and Zoe Robyn. The series secured a straight-to-series order from Netflix in May 2025 following a competitive bidding war. Production is scheduled to begin this fall in Prague, where much of the novel is set, marking the latest screen adaptation of Brown's popular character previously portrayed by Tom Hanks in three feature films.