By 2.30am the whereabouts of most of the kids was known. Most - but not all. Because, for a small handful of parents, there was no response to their frantic calls and messages. No wordless reunions and fierce hugs. These parents - the truly unlucky ones - plunged headlong into the awful realisation that their child had been involved in the night?s events ? The final goodbye is the hardest ? When a car carrying five teenagers home from a party crashes...