This book sheds light on the emergence, roots and gradual change of jihadism and exposes its detrimental impact on human lives. The author collected insightful interviews with ISIS fighters and also with women who joined ISIS. The book analyzes root causes and motivations of people based on the firsthand information and proposes the non-enigma cycles radicalization theory, and argues that two main cycles- grievances and resentment, and the radical ideology are the most significant. The book addresses the current situation with 70,000 women and children, who were family members of ISIS fighters, trapped in the desert following the defeat of the terrorist group in Syria and Iraq. The work also analyzes incentives of those who joined ISIS, nature of the jihadist ideology, emergence of a family jihad, roles of women and children within a so-called caliphate, and state policies to deal with captured ISIS fighters and their family members. The author gives detailed information on post-ISIS lives of women and children, who were family members of ISIS fighters who currently held in the desert in Northeast Syria. Detailed and vivid depiction of the ongoing humanitarian crisis in these camps presents the readers a clear understanding of the extent, intensity, and importance of the issue at hand and is what makes this book such a compelling and eye-catching one. The book also gives compelling accounts of state policies toward ISIS fighters that being discussed by international community such as establishing ad hoc tribunal, stripping citizenship, transferring to Iraqi prisons etc. It also gives detailed insights into rehabilitation and reintegration programs in several countries that repatriated their citizens from Syria and Iraq. The author`s research is unique due to her direct access to repatriated foreign fighters in several countries, which brought back their citizens from Iraq and Syria. "We will depart to Jihad if the God calls us," such are the imprints that are left on the minds of young children born and raised in ISIS-controlled territories. The book contains many human stories which makes the book interesting not only to scholars and policy makers but to general audience too.