Your Face Belongs to Us tells the story of Clearview AI, the secretive startup that scraped billions of photos from social media to create a facial recognition tool of unprecedented power. Kashmir Hill, a technology journalist at The New York Times, broke the story of Clearview's existence in 2020 and has since conducted extensive investigation into the company, its founder Hoan Ton-That, and the implications of a technology that can identify anyone from a single photograph. Hill traces Clearview's origins in far-right internet circles, its rapid adoption by law enforcement agencies worldwide, and the legal and ethical challenges that followed public exposure. She places Clearview within the longer history of facial recognition technology, from early experiments to the sophisticated algorithms that now identify faces with near-perfect accuracy. The book grapples with fundamental questions about privacy in an age of ubiquitous photography and powerful artificial intelligence: What happens when anonymity in public becomes impossible? Who should control the ability to identify strangers? Hill's reporting is both thorough and accessible, making technical concepts understandable while conveying the high stakes of a technology that is already reshaping policing, commerce, and daily life.