A writer says he has not forgotten his impression of serial sex offender Robert Napper when Napper stands in the dock at London’s Old Bailey. The article describes Napper as convicted of killing two victims: a young mother and her four-year-old daughter. The writer claims he became convinced Napper had more victims and says police were warned on the day in question but did not act. The piece is presented as a personal account and does not include additional details in the excerpt provided about the nature of the warning, who received it, or what police responses were taken. It focuses on the author’s reaction to Napper’s appearance in court and on the author’s belief that further harm could have been prevented. Across the two provided sources, the reported elements are consistent: Napper’s convictions for the deaths of a mother and her daughter, the author’s account of fearing Napper had additional victims, and the claim that police were warned but did nothing.