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 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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