In the summer of 2014, in northern Iraq, more than one hundred thousand Yezidis were besieged on Sinjar Mountain alone, by ISIS forces. Otten, a journalist based in Iraqi Kurdistan for the past four years, covers the massacres of Yezidi men and the mass abduction of Yezidi women and children with extraordinary intensity. Today, over 3,000 Yezidi women and girls remain in the Caliphate where they are bought and sold, and passed between fighters as chattel. Otten bases her book on interviews with survivors, as well as those who smuggled them to safety.