A former X-Factor contestant has been jailed for life following a 22-year sex attack campaign.Serial rapist Phillip Blackwell launched sex attacks on nine women over the two-decade period.The sentencing judge on Monday described Blackwell, an ex supply teacher, as "monstrous" as well as "pure evil" – adding: "Murderers aside, I can think of no more dangerous an individual that I have crossed in my 35 years in criminal law".Warwick Crown Court heard how the 56-year-old launched his first attack