The trial of Elizabeth Holmes, founder, and former chief executive of medical technology company 'Theranos' began earlier this month, with the one-time darling of Silicon Valley facing up to 20 years in prison on multiple charges of fraud.

But what led to the dramatic fall of one of the tech industry's brightest stars, and what might we expect from the trial in the weeks and months to come?

Kari Paul, tech reporter from the Guardian US joined Gavin to discuss.

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