It was supposed to be a joyous end to an unforgettable season, but it quickly turned into a nightmare. Journalist Layla Wright investigates events as they unfolded at the 2022 UEFA Champions League final in Paris between Liverpool and Real Madrid to try to understand what went wrong. Drawing on extensive first-hand testimony and mobile phone footage, Panorama pieces together the definitive forensic picture of what took place, examines mistakes made by UEFA and the French authorities, and asks what lessons can be learned for the future of fan safety.