A remarkable, authentic and chilling exposé of a global conspiracy that reads like a first-rate conspiracy thriller: a book of gripping, compulsive and disturbing impact

Engrossing … His wariness makes Gellman a thorough, exacting reporter; it also makes him a marvelous narrator for this particular story, as he nimbly guides us through complex technical arcana and some stubborn ethical questions … He deploys plenty of metaphors, not to adorn the stakes but to clarify them. He shows how discussions of medieval ramparts and Six Degrees of Kevin Bacon are surprisingly pertinent to the architecture of mass surveillance. His voice is laconic and appealingly wry … Dark Mirror would be simply pleasurable to read if the story it told didn’t also happen to be frighteningly real

Partly a thriller, partly a deeper exposé about the vast power the surveillance state, Dark Mirror is a riveting page-turner that captures the danger and drama of the most important leak of classified material in generations

Bart Gellman is that rare combination of a tenacious reporter, a clear explicator of the most complex subjects, and a first-rate storyteller, all rolled into one. This book is a deep exploration of a surveillance apparatus of unimaginable magnitude, a chronicle of Gellman’s intense and sometimes fraught relationship with his enigmatic and controversial source, Edward Snowden, and an intimate, disarmingly candid reporter’s notebook about what it’s like to spend years watching the watchers, and realizing, along the way, that they are watching you back

A riveting narrative of investigative reporting in the age of surveillance. It is a dramatic, authoritative account not only of the significance of Edward Snowden’s revelations, but of what public interest journalism must overcome to inform citizens about their exposure to our dystopian Internet