Netflix’s upcoming adaptation of Dan Brown’s The Secret of Secrets continues to fill out its cast. The latest batch of actors who’ve joined the untitled Robert Langdon series includes Cherry Jones, Corey Stoll, Rob Delaney, and Abbey Lee. The foursome joins previously announced series stars Morgan Spector as Langdon and Rebecca Hall as Katherine Solomon. The series is based on Brown’s sixth book in the series, with the author involved as co-creator and executive producer. Co-creator Carlton Cuse (Bates Motel, Lost) is serving as showrunner, writer, and executive producer.