Glenn Greenwald, No Place to Hide: Edward Snowden, the NSA, and the U.S. Surveillance State (2014)

For those of us who followed intently as the saga of Edward Snowden and the NSA played out in 2013, this book is still valuable because it pulls together all the information and serves as a useful chronicle. The book is written in an advocacy style; I prefer a more detached journalistic style. The book is strongest when discussing specific details.