Fourteen-year-old Josseline, a young girl from El Salvador, died alone on Arizona's migrant trail. With a sweeping perspective and vivid on-the-ground reportage, Regan tells the stories of the people caught up in this international tragedy.

For nearly a decade, Margaret Regan has reported on the chaos along the Arizona-Mexico border, ground zero for immigration since 2000. Undocumented migrants cross into the state in overwhelming numbers, pushed into its dangerous deserts by a US border policy sealing off safer urban crossings. In peak years, border patrol in Arizona's Tucson Sector catches more than a thousand migrants a day. Arizona has the highest number of migrant deaths; Josseline was just one of thousands to perish in its deserts and mountains. Regan writes firsthand of the desperation that compels people to cross, of the environmental damage wrought by the new border wall, and of the unidentified bodies piled up in a Tucson morgue. Regan's on-the-ground reportage puts her in the heart of America's complicated immigration story. Her extraordinary ability to witness guarantees that the stories and people you encounter here will stay with you, long after you finish the book.