John Carreyrou's book "Bad Blood," which details the rise and fall of the Silicon Valley startup Theranos. The text explores the company's history, focusing on the character of its founder, Elizabeth Holmes, her relationship with Sunny Balwani, and the questionable claims surrounding Theranos's blood testing technology. The excerpt examines the company's internal struggles, regulatory challenges, and the eventual investigation that led to its downfall, revealing a culture of deception, manipulation, and fear that fueled Theranos's rapid ascent and equally swift demise.