Friedrich Dürrenmatt was a Swiss author and dramatist. He was a proponent of epic theater whose plays reflected the recent experiences of World War II. The politically active author gained fame largely due to his avant-garde dramas, philosophically deep crime novels, and often macabre satire. One of his leading sentences was: "A story is not finished, until it has taken the worst turn". Dürrenmatt was a member of the Gruppe Olten.