Bill Bergson Lives Dangerously is a 1951 Swedish novel written by Astrid Lindgren. It is the second book about the Master Detective Kalle Blomkvist. In this book the Rövarspråket appears for the first time and is very popular until present. Wikipedia
Originally published: 1951
Author: Astrid Lindgren
Genre: Children's literature
Followed by: Bill Bergson and the White Rose Rescue