MGM+ has added eleven new cast members to its new Stephen King series, The Institute, with filming set to get underway very soon. The Institute is an upcoming Stephen King adaptation series coming to MGM+ that we told you about earlier this summer. It will star Ben Barnes (Shadow and Bone, The Punisher, Westworld) as Tim Jamieson and Mary-Louise Parker (Weeds, Angels in America) as Ms. Sigsby. Today, eleven names were added to the cast list as production is about to begin. Joe Freeman (Doctors), Fionn Laird (Under the Banner of Heaven), Hannah Galway (Under the Banner of Heaven), Julian Richings (Beau Is Afraid), Robert Joy (Julia), Viggo Hanvelt (Our Christmas Mural), Arlen So (Something Rotten), Birva Pandya (The Umbrella Academy), Dan Beirne (Ginny & Georgia), Martin Roach (Suits) and Jane Luk (Streams Flow From A River) join previously announced Simone Miller and Jason Diaz as series regulars. Deadline had the news.