 It described a "catalogue of bad decisions and errors" by the Metropolitan Police which had resulted in Napper being free to kill Nickell.It said that officers missed a series of opportunities to take the violent psychopath off the streets and suggested the lives of Samantha Bisset and her four-year-old daughter Jazmine would also have been saved if police had acted on tip-offs, including one by Napper's mother.Rachel Cerfontyne, of the IPCC, said that police failed to investigate the 1989 report that he attacked a woman on Plumstead Common, in London and no record of the telephone call can be found.