In the late 19th century, a chambermaid from Paris relocates to a remote household in Provence, engages in trysts and finds herself enraptured with a coach driver.

Based on the 2000 book of the same name by Emmanuel Carrère, it is inspired by the real-life story of Jean-Claude Romand. L’Adversaire’s protagonist Jean-Marc Faure (Auteuil) pursues an imaginary…