At the time, Yarros expressed her excitement about the Haunting of Hill House and Good Wife producer coming aboard, writing on Instagram, “Welcome to the team, Meredith Averill!”

“Guys, I love everything this wonderful woman has worked on and I’m so excited to have her joining us,” she continued. “What an incredible ensemble of talent we have gathered around the show! Here we go!”

And as for the latest on the books the show will be based on? Following the releases of Fourth Wing and Iron Flame in 2023, followed by Onyx Storm in January 2025, Yarros recently gave fans an Empyrean companion book titled Threshing Day—a collection of short stories chronicling how several characters bonded with their dragons—on Sept. 29, 2026.

After that? Along with the fourth and fifth novels in the planned pentalogy, Yarros will also be releasing the first volume of a Fourth Wing graphic novel next year.

To learn about more bestselling books being adapted into television shows and movies, keep reading…