This week we have been reporting from the Berlin International Film Festival. And without a doubt, very high on the list of favorites has been Christian Petzold’s new film, Undine. You might know Petzold from his previous features such as Transit, Barbara, and Phoenix. Undine is the story of a museum guide who moves on from a breakup to a relationship with a new man. But there are undercurrents of something mysterious to this romance, which draws on the age-old myth about a water nymph. In Berlin, our assistant editor Devika Girish sat down with Christian Petzold, an inveterate storyteller, to talk about Undine.