How a $9 billion startup deceived Silicon Valley

John Carreyrou of The Wall Street Journal broke the original story about how Theranos was misleading investors. Carreyrou's book, "Bad Blood," documents the history of Theranos and how its CEO Elizabeth Holmes sold a vision that was too good to be true. In 2018, Carreyrou sat down with Business Insider to talk about how Theranos was able to pull off this massive deception.