In June 1497, Juan - or Giovanni - Borgia, favoured son of Pope Alexander VI, was found brutally murdered in the River Tiber. Who committed this heinous crime? Suspects ranged from his ambitious brother Cesare to the Borgias' political enemies, the Orsini family. Despite an extensive investigation by the Pope, Giovanni's murder remains one of history's greatest cold cases.

In the third episode of our special series, Professor Suzannah Lipscomb is joined by Professor Catherine Fletcher as they delve once again into the Borgias' treacherous Renaissance world, uncovering secrets of power, betrayal, and intrigue.

Presented by Professor Susannah Lipscomb. The researcher is Alice Smith, audio editor is Amy Haddow and the producer is Rob Weinberg. The senior producer is Anne-Marie Luff.

Theme music from All3Media. Other music courtesy of Epidemic Sounds.

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