Light fast political thriller. What if an Edward Snowden didn't just leak NSA secrets about illegal surveillance programs, but what if someone like him wanted to make everyone in the NSA who had dismissed him concerns and ended up firing him pay and pay with their lives? And so you have the premiss of this novel. It may be a little bit far fetched but I thoroughly enjoyed it as a light escape read. There are of course the relationship between police partners and FBI partners and their collaboration as they solve what they believe is serial killer on the loose. Lots of interesting twists and turns.