Elizabeth Holmes, the disgraced founder of Theranos, the lab testing company that promised to revolutionise health care, and its former president, Ramesh Balwani, were indicted on Friday on charges of defrauding investors out of hundreds of millions of dollars as well as deceiving hundreds of patients and doctors.
The criminal charges were the culmination of a rarity in Silicon Valley — federal prosecution of a technology start-up. This one boasted a board stacked with prominent political figures and investors, and a startling valuation of $9 billion just a few years ago. In the fabled universe of overnight billionaires and unicorns, companies

)