Watch: What is a mistrial and what does it mean for Lindsay Clancy?

The judge in the trial of Lindsay Clancy, the US mother accused of murdering her three children, has officially declared a mistrial in the case. It comes after Judge William Sullivan denied the defence team's emergency appeal asking the Massachusetts Supreme Judicial Court to intervene.

The BBC's Ione Wells explains what a mistrial is as the case ends in no verdict.

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