The fascinating tale of a heart that died twice: best podcasts of the week

How did two men who shared the same heart and the same wife end up dying the same way? Plus, inside the beef between ‘the Kennedys of Italy’

This fascinating series opens with the death of a man from a gunshot wound, and the revelation that this isn’t the first time his heart has stopped beating. It previously belonged to another man who died the same way, and who also had the same wife. Hosted by Karen Kilgariff, what follows is an intriguing eight-part tale that veers between a scientific exploration and a gripping true-crime saga. Alexi Duggins Apple, from Monday 19 October

Another series of the slick podcast about powerful business dynasties, and the beef behind the scenes of some of the world’s best-known brands. This time, Sofia Bettiza investigates the Agnelli family, sometimes called “the Kennedys of Italy”, who founded the car giant Fiat and were rocked by the death of their powerful patriarch Gianni. Hannah J Davies BBC Sounds, all episodes out from Monday 19 October

Colin Norris was a Leeds nurse who became known as “the angel of death”, convicted for murdering four elderly patients and attempting to kill two more. But new evidence suggests they weren’t murdered. Louise Shorter investigates, starting with the insulin poisoning of Ethel Hall. Hollie Richardson Widely available, episodes weekly

Journalist Audrey Gillan takes an appropriately delicate approach to the story of a 16-year-old girl murdered by a classmate. Diane Watson died in Glasgow in 1991, but the pain for those who knew her continues. In this six-part BBC Scotland series, Gillan looks not only at the consequences for her killer, but also Diane’s family’s fight to stop the press from defaming their late daughter. HJD BBC Sounds, all episodes out from Monday 19 October

After the first season of this podcast’s reporting on the US educational system, 26 states changed the way they teach reading. Now, education journalist Emily Hanford offers a colourful tale of a US maths experiment that left four-year-olds fluent in algebra, only for it to be shunned. AD Widely available, episodes weekly