FKA twigs (The Crow) plays the mother character; Noah Jupe (A Quiet Place) is the Boy. Souheila Yacoub (Dune: Part Two) is also in the cast. But that teaser is all Cage, presumably playing the Carpenter, reacting to the “natural and divine” horrors swirling around his grimy existence. The flies buzzing at the end are an especially eerie touch.