John Carreyrou is a French-born American investigative journalist. As a reporter for *The Wall Street Journal*, he uncovered the fraud at the blood-testing startup Theranos through a series of investigative reports that drew worldwide attention. His reporting earned the 2015 Pulitzer Prize for Explanatory Reporting and is widely regarded as a landmark in investigative business journalism. He is the author of *Bad Blood: Secrets and Lies in a Silicon Valley Startup*, the bestselling account of the rise and collapse of Theranos and its founder, Elizabeth Holmes.
