A Separation (2011)

Asghar Farhadi's drama starts with a couple at a stalemate: Simin wants to leave Iran with their daughter, and Nader will not abandon his father, who has Alzheimer's. The caregiver he hires, a devout woman from a poor suburb, brings a second family into the story, and a confrontation between the two households ends up in court. Every adult has a decent reason and something left unsaid, so a group spends the evening sorting out who lied, which lies were forgivable, and whether class and faith change what honesty demands. It was the first Iranian film to win the Oscar for Best Foreign Language Film and the Golden Bear at Berlin, and it grips like a thriller.