Fritz Angst (10 April 1944 – 2 November 1976) was a German-language Swiss author better known as Fritz Zorn.Angst is best known for his autobiograpical essay Mars (1976), which was published under the pseudonym of Fritz Zorn after his death from cancer. It describes and sharply criticizes his upbringing, parents, and environment in one of the most wealthy lakeshore neighborhoods of Zürich, Switzerland. It has been made into a comic book and a play.