[DeepL Translation - needs review] Klara, Otto, Paule and Lina are the Shadow Gang: Curious, nimble and fearless, they are always there when a crime needs solving ... When Otto is suspected of murdering a venerable grand duchess, the Shadows have to act! Who is really behind the murder? What is the meaning of the last word that the Grand Duchess struggled to say: Solyanka? And what are the legendary "Tears of the Tsarina", which the Shadows learn about during their search for clues? The chil...
