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Erika Cheung went from a trailer park to a top tech company job, but something was off.

She knew how to work hard, growing up in a one-bedroom trailer, she dreamed of pursuing her passion for science and helping others. So Erika was thrilled to land her first job out of university at a booming tech company promising a revolution in healthcare. Fronted by the glamorous and wealthy Elizabeth Holmes, Theranos claimed to have the technology to be able to tell from a few drops of blood whether someone had a range of diseases. That was not true. And it took Erika, one of their most junior employees, to blow the whistle – at great personal risk.

Presenter: Jo Fidgen Producer: Mary Goodhart Editor: Munazza Khan

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