In October of 2015, John Carreyrou, Pulitzer Prize-winning investigative reporter for the Wall Street Journal, wrote an article exposing the troubling and deceptive business practices of Theranos, the blood testing start-up many believed would upend health care. The lure was driven by enigmatic founder Elizabeth Holmes, a Stanford dropout who was only 31 at the time of the exposé. Carreyrou's story initiated the precipitous fall of the $9 billion company. He joins us to discuss his new book "Bad Blood" and how he exposed a Silicon Valley story that was too good to be true.

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