With production already under way, Deadline reports Guy Ritchie's "Knights of the Round Table" has added "Annabelle" star Annabelle Wallis to the cast.

She'll play Maid Maggie, joining Charlie Hunnam, Astrid Berger Frisby, Jude Law, Eric Bana, Djimon Hounsou, Aiden Gillen and Mikael Persbrandt in the retelling of Arthurian legend, expected to launch a six-movie franchise for Warner Bros.

Wallis, who had minor roles in "X-Men: First Class" and "Snow White and the Huntsman," played Jane Seymour on BBC's "The Tudors" and Grace Burgess on "Peaky Blinders."

"Knights of the Round Table" opens July 22, 2016.