In June 2023, Barnaby Webber, Grace O'Malley-Kumar and Ian Coates were stabbed to death by Valdo Calocane. Reporter Navtej Johal investigates his history of mental health problems, the care he received in the three years before the Nottingham attacks and asks what lessons can be learned. Speaking for the first time to BBC Panorama, members of the Calocane family help to shed light on the missed opportunities in his care
