Bad Blood focuses on the criminal trial of Elizabeth Holmes, founder of the blood-testing start-up Theranos, promises to be momentous. It won’t just be the charismatic young woman with a preternaturally deep voice who’ll be on a trial in a federal courtroom in San Jose, California this March; it will be the culture of Silicon Valley as a whole. A culture that thrives on loose business ethics and exalts rule-breaking as a virtue.    Hosted by John Carreyrou is an award-winning investigative reporter. He is the author of the best-selling book, “Bad Blood: Secrets and Lies in a Silicon Valley Startup.” He was the first to break the scandal of the bloodtesting company Theranos in 2015, in the Wall Street Journal.