How is paternity determined? The Federal Constitutional Court's ruling on so-called secret paternity tests has established a right to genetic clarification of descent. The aim of this clarification is for fathers to determine whether their legal child is also their biological child. Following the ruling, a law was enacted to clarify descent. The new law creates the "always certain" father. In this context, what is the status of the child's security? How do father’s rights and children's rights relate to each other? Sabina Schutter explores these questions using a discourse analytical approach. The book is aimed at researchers, students, and practitioners in the fields of childhood and legal sociology.