An exciting mystery about mysterious observations for grades 5 and up. Friends Ella and Max initially just wanted to spy on their classmate Georg because his behavior seems strange to them. They never suspected they would be dealing with real magic. Then they are faced with the decision to protect their unsympathetic English teacher from an impending crime. The thrilling story immediately captivates young readers and raises important questions: How does one act when they are the only one who believes that an outsider, whom they hardly know, is in danger? Should they warn their unsympathetic teacher about the blackmailers and expose themselves as spies, with all the embarrassing consequences that could follow? The core question is: Does the image one has of their teachers or classmates correspond to reality?.