Nicholas Prosper, 19, who also plotted to carry out mass shooting at his former primary school, gets life sentenceA “truly evil” 19-year-old who murdered his mother and two younger siblings as part of a failed plot to kill 30 children and become the worst mass murderer in British history has been jailed for life with a minimum term of 49 years.Nicholas Prosper admitted murdering Juliana Falcon, 48, Kyle Falcon, 16, and Giselle Falcon, 13, last month. Their murders were part of a wider plot to storm a morning assembly at his former primary school with a shotgun and “cause the