Backed by investors such as Larry Ellison and Tim Draper, Theranos sold shares in a fundraising round that valued the company at $9 billion, putting Holmes's worth at an estimated $4.7 billion. There was just one problem: The technology didn't work.For years, Holmes had been misleading investors, FDA officials, and her own employees. When Carreyrou, working at The Wall Street Journal, got a tip from a former Theranos employee and started asking questions, both Carreyrou and the Journal were threatened with lawsuits. Undaunted, the newspaper ran the first of dozens of Theranos articles in late 2015. By early 2017, the company's value was zero and Holmes faced potential legal action from the government and her investors. Here is the riveting story of the biggest corporate fraud since Enron, a disturbing cautionary tale set amid the bold promises and gold-rush frenzy of Silicon Valley.

    For on that rainy morning, the young Yale professor Hiram Bingham III climbed into the Andes Mountains of Peru and encountered an ancient city in the clouds: the now famous citadel of Machu Picchu. Nearly a century later, news reports have recast the hero explorer as a villain who smuggled out priceless artifacts and stole credit for finding one of the world's greatest archaeological sites. Mark Adams has spent his career editing adventure and travel magazines, so his plan to investigate the allegations against Bingham by retracing the explorer's perilous path to Machu Picchu isn't completely far- fetched, even if it does require him to sleep in a tent for the first time. With a crusty, antisocial Australian survivalist and several Quechua-speaking, coca-chewing mule tenders as his guides, Adams takes readers through some of the most gorgeous and historic landscapes in Peru, from the ancient Inca capital of Cusco to the enigmatic ruins of Vitcos and Vilcabamba. Along the way he finds a still-undiscovered country populated with brilliant and eccentric characters, as well as an answer to the question that has nagged scientists since Hiram Bingham's time: Just what was Machu Picchu?