Nottinghamshire Police were warned eight times that a pensioner’s life was in danger before he was murdered. Barry Spooner, 74, was killed by Sarah Hansford, 44, who stabbed him more than 30 times and dumped his body in the cellar of his flat in May last year. Hansford had befriended and preyed on Spooner before draining him of his life savings. The 74-year-old was killed just weeks before Nottingham University students Barnaby Webber and Grace O’Malley-Kumar, both 19, and 56-year-old caretaker Ian Coates were stabbed and murdered by paranoid schizophrenic Valdo Calocane. Nottinghamshire Polic…