HBO’s documentary “The Inventor: Out for Blood in Silicon Valley” looks at the case of Elizabeth Holmes who created the company Theranos promising to revolutionize the field of blood-testing. The company swiftly rose to be valued at billions of dollars, but was eventually exposed as a fraud.Host Thom Powers interviews director Alex Gibney and producer Erin Edeiken about the making of the film.Pure Nonfiction’s theme music is composed by Andre Williams who passed away this week at age 82. We send our condolences to his family and friends. See Tricia Todd’s documentary “Agile, Mobile, Hostile: A Year with Andre Williams”On Twitter: @alexgibneyfilm @HBODocs @thompowers @PureNonfiction