Sofi Oksanen is a night owl. I enter her apartment on the top floor of a building in Kallio, a gentrified working-class neighborhood in Helsinki, at three in the afternoon. The white, cloudy day is fading, and yet the writer has closed the shutters and drawn the curtains. A long black table surrounded by crimson furniture sits on a dark parquet floor; the walls are painted garnet red. Oksanen is petite, red-colored lips brighten her pale complexion, narrow eyes and mauve lids are framed by round glasses. She loves Christmas. Your Christmas tree is still shining at the end of January.