Richard Kenneth Djerf's case is often compared with that of a murderer who killed his wife, mother, and three children on what date?
John List John Emil List (September 17, 1925 – March 21, 2008) was an American multiple murderer and long-time fugitive. On November 9, 1971, he killed his wife, mother, and three children in their home in Westfield, New Jersey, then disappeared. He had planned the murders so meticulously that nearly a month passed before anyone suspected that anything was amiss.
John Cooper (serial killer) John William Cooper (born 3 September 1944) is a serial killer and diagnosed psychopath from Milford Haven, Pembrokeshire. On 26 May 2011 he was given four life sentences for the 1985 double murder of brother and sister Richard and Helen Thomas, and the 1989 double murder of Peter and Gwenda Dixon. Cooper was also sentenced for the rape of a 16-year-old girl and a sexual assault on a 15-year-old girl, both carried out at gunpoint, in March 1996, in woodland behind the Mount Estate, Milford Haven.