For many, the arms trade and its dealers are the root cause for regional wars and global terrorism. In both public and academic debates, arms dealers are considered immoral as they profit from conflict, due to their key position in the international arms trading business. Nevertheless, there seems to be little to no interest in the personal lives of those actively involved. In his criminological biography of a licensed arms dealer, Yarin Eski provides an in-depth, interdisciplinary approach to and understanding of the global arms trade, revealing a deep insider view placed in a wider socio-cultural context. From early discussions about childhood and career choices, to reflections on becoming and being an arms dealer, Eski offers a methodologically embedded approach, and advances biographical writing in the field of criminology. It is a unique and thought-provoking contribution to the fields of criminology, ethnography, sociology, critical security studies, policing studies, war studies and international politics, and offers an unparalleled insight from within.