This is a riveting, panoramic look at "homegrown" Islamist terrorism from 9/11 to the present. Since 9/11, over 300 Americans - born and raised in Minnesota, Alabama, New Jersey, and elsewhere - have been indicted or convicted of terrorism charges. Some have taken the fight abroad: an American was among those who planned the attacks in Mumbai, and more than 80 U.S. citizens have been charged with ISIS-related crimes. Others have acted on American soil, as with the attacks at Fort Hood, the Boston Marathon, and in San Bernardino. What motivates them, how are they trained, and what do we sacrifice in our efforts to track them?