Agaton Sax is the protagonist of a series of Swedish-language humorous detective novels written for children by Swedish author Nils-Olof Franzén and illustrated...

Nils-Olof Franzén (1916–1997) was a Swedish writer who wrote the Agaton Sax series. He was born 23 August 1916, in Oxelösund. He died on 24 February 1997...