Codul hoților

A stolen volcanic rock draws the Mistery cousins to Berlin. It belongs to Isolt Enghelhart, who owns the Hotel Faust. She inherited the rock from her father. Its low value makes the theft hard to explain. The cousins fly to Germany to take on the case. Their search leads into a past of secrets, hidden languages and smuggled treasure.

This mystery for children is by Sir Steve Stevenson. It is the tenth book in the Agatha Mistery series. This edition has black-and-white art by Stefano Turconi. Elena Banica translated the text from Italian.