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This week, Laura looks at a 30-year-old cold case that’s blown wide open thanks to a piece of chewing gum.

This week, Laura looks at how a 30-year-old cold case was solved thanks to some impressive detective work, a few exciting advances in DNA technology, and… a piece of chewing gum.

Murder They Wrote with Laura Whitmore and Iain Stirling is available weekly on ´óÏó´«Ã½ Sounds. Subscribe now so you never miss an episode. Email us at lauraandiain@bbc.co.uk.

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37 minutes

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