Overview
Bill Bergson Lives Dangerously (original Swedish title: Mästerdetektiven Blomkvist lever farligt) is a 1951 Swedish novel written by Astrid Lindgren. It's the 2nd book about the Master Detective Kalle Blomkvist. In this book the Rövarspråket ("Robber Language") appears for the first time and is very popular until present. According to the book, Eva-Lotta's father Master Baker told her when he and his friends spoke Rövarspråket as boys.
Synopsis
It is one year since the adventure with Uncle Einar and the jewel thieves the last summer. Now it is summer again and the "war" between Röda Rosen and Vita Rosen continues. When "Vita Rosen" (Kalle, Anders and Eva-Lotta) pass the old man Gren on the bridge over the river, Eva-Lotta says that Gren is usurer. They run to Prärien, a place at the outside of their city Lillköping where the mansion from the 18th century is, and "Röda Rosen" have made it to their headquarters. During the "war" they kidnap Anders and lock Kalle and Eva-Lotta in.
"Röda Rosen" (Sixten, Benka and Jonte) have a "hearing" with Anders in Jonte's room. In the house which is in front of Jonte's house Gren lives. Kalle and Eva-Lotta, who have escaped, climb onto the roof and see what they are doing with Anders. On the way up, Eva-Lotta sees a man in green gabardine trousers who is visiting Gren and hears that they'll "meet on Wednesday at the regular place" and Gren'll bring all the promissory notes.
"Röda Rosen" force Anders to tell them where Stormumriken is hidden but Anders escapes. When Eva-Lotta is ordered to go to the mansion and get Stormumriken, he sees Gren and the man with the green gabardine trousers. When the man in the trousers is going away, she runs into him and then he drops a paper, a promissory note, which she takes. Later she finds Gren dead and runs home scared. The police block the area at the mansion. They have a hearing with Eva-Lotta who tells them what she did and that she saw Gren's murderer. They realize that his name is written on the promissory note, but she doesn't remember what she did with it.
From Wikipedia (CC BY-SA 4.0).