Who are biographers? Are they people who gather and record facts or people who interpret facts? Should they be psychologists and writers, as well as experts in the field they are writing about and detectives? Malta’s guest is Krystyna Czerni, art historian and critic (Institute of Art History, Jagiellonian University Kraków). Her book Nietoperz w świątyni. Biografia Jerzego Nowosielskiego (devoted to one of the most important XXth century Polish painters) was one of the runners-up for the Nike Award in 2012.