Silicon Valley is notoriously full of founders who exaggerate, intentionally lie to the media, and dupe investors, and even Congress. But there are few stories that rival the fraud behind Theranos, the blood-testing company once worth $10 billion, and now worth nothing. John Carreyrou, author of a new book, "Bad Blood," joins us to explain how the company's CEO, Elizabeth Holmes, defrauded everyone who came into her orbit, how she might still end up behind bars, and he answers the question on everyone's mind: Is Holmes a sociopath?

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