Richard Kenneth Djerf's case is often compared with that of a murderer who killed his wife, mother, and three children on what date?
Richard Djerf Richard Kenneth Djerf (born November 6, 1969) is an American mass murderer, currently on death row in Florence, Arizona. His case is often compared with that of John List, with the exception that Djerf killed someone else’s family.
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.