Never-before-seen video shows Theranos founder Elizabeth Holmes being questioned by government attorneys about the company's downfall.
Holmes was just 19 when she founded the Silicon Valley company that promised to revolutionize the healthcare industry with its innovative blood-testing technology. Holmes, who was likened to Steve Jobs, went on to become the world's youngest, self-made female millionaire.
But prosecutors say it was a giant scam.
Theranos claimed to be able to run hundreds of different blood tests, including for cancer, on one tiny drop of blood — all while you shopped. But prosecutors say Holmes knew there were issues with the accuracy of the technology.
She was indicted on federal wire fraud charges by the U.S. Department of Justice in June 2018. She has pleaded not guilty.
Footage of Theranos, now 34, being deposed appears in a new documentary called "The Dropout."
"How many tests could it run?" one attorney asks Holmes in the footage.
"I don't know exactly what the number was," she responds.
"Did it concern you that a number of tests weren't working?" the attorney asks.
Rebecca Jarvis, ABC News' chief business, technology and economics correspondent, produced the documentary.
"Steve Jobs was her hero," Jarvis said of Holmes. "She was emulating him right down to that black turtleneck, but in addition to that, she hired in the early days of Theranos a number of Apple employees."
But "all of a sudden this is a woman who 663 times in these depositions says, 'I don't now. I can't answer the question,'" she said.
Holmes is awaiting trial for fraud and could go to prison for up to 20 years if convicted.
There will be a preview of the documentary on Wednesday's "Nightline." A podcast about the company has also been launched.
The story is also the subject of a Hollywood movie, "Bad Blood," which will star Jennifer Lawrence as Holmes. It's based on a book by Wall Street Journal reporter John Carreyrou, who first exposed Theranos.