The Mona Lisa might just be the most recognisable painting in the world. But did you know that, in 1911, Leonardo da Vinci’s priceless portrait was stolen from the Louvre? Find out how a humble house painter pulled off this incredible theft – and why police brought Picasso in for questioning – in Iain’s episode this week.Murder They Wrote with Laura Whitmore and Iain Stirling is available weekly on BBC Sounds. Subscribe now so you never miss an episode. Email us at [email protected].