The social researcher Martin Schäuble carefully traces the biographies of Daniel and Saed: a German convert who intended to carry out an attack, and a Palestinian who executed a suicide bombing. Unlike in "Black Box Jihad," the author analyzes the biographies in detail in his dissertation. How should the disruptions in the childhood and youth of these two individuals be assessed? What draws people from such different backgrounds to jihadist ideology? What role do attachments and authorities play? And what does this reveal about the society in which they lived? For his analyses, the author consulted psychologists, interviewed terrorism expert Peter Waldmann, developmental psychologist Rolf Oerter, spoke with hip-hop researchers, sociologists, and many others. The author comprehensively addresses his methodology and field research.