Here is a high-concept satire of bourgeois family life with all its secrets and lies from German film-maker Frédéric Hambalek; it is something to remind you of the notorious Babel fish in Douglas Adams’s The Hitchhiker’s Guide to the Galaxy, which you can put in your ear and then comprehend what any creature in the universe is saying — a miraculous promotion of pure understanding which has been the cause of more and bloodier wars than anything else. Marielle (Laeni Geiseler) is a moody and withdrawn teenager with messed-up parents. Her mum is Julia (Julia Jentsch, who 20 years ago...