A high-strung cellist and her husband move into a new apartment building, where the musician, increasingly agitated over an upcoming international competition, begins to suspect that the old woman living one floor up wants to drive her mad. Austrian writer-director Jakob M. Erwa makes eerie use of the building’s high ceilings and wide-open stairwells as the tension between the two women escalates. Eventually the musician begins to seem more paranoid than preyed upon, and the movie turns into a room full of mirrors. Erwa gets most of the credit for this with his cagey plotting, but he couldn’t have pulled it off without veteran actress Tatja Seibt as the woman upstairs; her blunt features suggest a harsh intent but can also soften in vulnerability. In German with subtitles.