When students get on the trail of a perpetrator or break down a sequence of events, reading becomes much more enjoyable! And when solving the case simultaneously enhances your students' scientific competence, they have achieved the learning objective! Each reading mystery is accompanied by concise didactic notes, including curriculum references, necessary prior knowledge, and connections to educational standards competencies. The subject information provides a brief summary of the respective topic addressed, such as light refraction, acid-base indicators, and coniferous trees. Ten exciting reading mysteries serve as text templates. With the accompanying worksheets and action-oriented tasks at varying difficulty levels, young people not only practice reading and understanding these texts but also solve the case using scientific skills.