Newcomers Jahzir Bruno and Codie-Lei Eastick are also negotiations to join the cast, Variety has learned.
Based on the 1973 novel, the film follows a 7-year-old boy (Bruno) who has a run in with real-life witches. Warner Bros. had previously adapted the book in 1990 with Anjelica Huston playing one of the title characters, but sources close to the project say Zemeckis’ version will be more rooted in the original source material, while Huston’s version was a loose adaptation.
Spencer will play the grandmother of Bruno’s character, and Eastick is portraying the other boy who has a run in with the Witches.
Zemeckis is producing with his partner Jack Rapke through their banner ImageMovers, along with Alfonso Cuaron and Guillermo del Toro.