Libby McKay had it all ahead of her but five years ago she died of a serious head injury on her way home from a Christchurch party. Her boyfriend told police she'd fallen from his car at 70 km/hr. The police say they couldnt establish evidence of a crime but for Libby's mother there are serious questions that need answering. Was it a tragic accident or something else? Could new research force this case to be reopened?