Where Keith Turner bludgeoned to death his mother Georgina and sister Karen during a frenzied attack at their family home in Cramlington in 1973. The then 21-year-old admitted carrying out the killings after becoming involved in a “trivial quarrel” with his 18-year-old sister. Turner was jailed for life at Newcastle Crown Court in 1975 and served 19 years behind bars before he was released on licence.