This book is a welcome addition to the rather small literature on domestic and homeland intelligence in the United States. It will interest more than just intelligence specialists, because Tromblay addresses broader homeland security issues, focusing especially on the FBI and DHS, and the book would serve as a useful introduction to those agencies.
Dahl, Erik. 2019. "Book review: Spying: Assessing US Domestic Intelligence Since 9/11 By Darren E. Tromblay." Homeland Security Affairs 15 (September). https://www.hsaj.org/articles/15391