Ari Aster Director, Screenwriter Toni Collette Annie Actor, Executive Producer Gabriel Byrne Steve Actor, Executive Producer Alex Wolff Peter Actor Ann Dowd Joan Actor Milly Shapiro Charlie Actor Mallory Bechtel Bridget Actor Brock McKinney Aaron Actor Christy Summerhays Charlie's Teacher Actor Jonathan Gardner Executive Producer William Kay Executive Producer Ryan Kreston Executive Producer Kevin Scott Frakes Producer Lars Knudsen Producer Buddy Patrick Producer Pawel Pogorzelski Cinematographer Lucian Johnston Film Editing Jennifer Lame Film Editing Colin Stetson Original Music Grace Yun Production Design Richard T. Olson Art Director Jessica Kelly Casting Brian Lives Set Decoration Olga Mill Costume Design