For 40 years, Walter Feilchenfeldt has been active in the international art trade. Beyond his extensive business activities, he has curated various significant exhibitions and published numerous scholarly contributions on provenance and authenticity issues. As a co-editor of the catalog of Cézanne's paintings and as the author of fundamental works on the reception history of Van Gogh, he is one of the foremost experts on the works of these artists. This volume brings together Walter Feilchenfeldt's essays, catalog contributions, research papers, and presentations that he has published in the specialist literature and presented at international colloquia over the past 25 years. Thus, one of the most distinguished experts on Cézanne and Van Gogh presents the sum of his previous research and insights. Art history as a thriller - and as a school of seeing.