Rebecca Stevenson - Theranos founder on trial

Elizabeth Holmes seemingly had the world at her feet. In 2003, the 19-year-old college dropout founded Theranos, a medical technology company that promised to revolutionize health care with a device that could test for a range of conditions using just a few drops of blood from a finger prick. Holmes racked up big-name investors, forged a partnership with Walgreens and raked in the money, with Theranos reached a valuation of $9 billion. But it was too good to be true. She is now trial facing up to 20 years in prison for criminal fraud charges, to which she has pleaded not guilty. Rebecca Stevenson is BusinessDesk's head of news.