Between Two Worlds: Emmanuel Carrère’s adaptation of a non-fiction book follows a writer who starts working as a temporary cleaning lady incognito to get inspiration for her new book. The film looks at the bonds she forms with the blue-collar women there, but doesn’t shy away from the ethical and emotional impacts of her lies. Juliette Binoche gives a strong performance as the well-meaning intellectual who is overwhelmed by the deep dive she makes. Hélène Lambert plays one of her friends in the new world, a hard-working mother, in a fine performance, mingling anger and sadness quite well. Léa Carne plays another friend, gentle and sweet. Aesthetically, the film is serviceable but unremarkable. Composer Mathieu Lamboley’s musical score is mostly soothing electronic music, both unusual and effective.