Bad Blood: Secrets and Lies in a Silicon Valley Startup by John Carreyrou is a gripping true story about the rise and fall of Theranos, a startup that promised to revolutionize blood testing. Journalist John Carreyrou uncovers how its founder, Elizabeth Holmes, built a multibillion-dollar company based on deception, false claims, and corporate secrecy. The book exposes how ambition and greed led to one of the biggest scandals in Silicon Valley history—a powerful lesson on truth, ethics, and the dark side of innovation.