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Kim from Durham has sent in the legendary local case of Mary Ann Cotton. Iain takes us through Mary’s many poisonings and explores the origins of THAT nursery rhyme.

If you want to see the massive hole that the Rathkeale Rover thieves drilled into the side of Durham University Oriental Museum, click here: /news/uk-england-cambridgeshire-35667130

And for the picture of the crime-fighting cat, click here: /news/uk-england-tyne-35934206

Murder They Wrote with Laura Whitmore and Iain Stirling is available twice a week on ³ÉÈË¿ìÊÖ Sounds. Subscribe now so you never miss an episode. Email us at lauraandiain@bbc.co.uk