It was a crime which horrified the country. Valdo Calocane stabbed to death Grace O’Malley-Kumar, Barnaby Webber and Ian Coates in Nottingham last June.
He admitted manslaughter and was given a hospital order after he was found to be suffering from paranoid schizophrenia.
The families of his victims are demanding a public inquiry after what they claim were failings in the case by police, the CPS and the health service