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.
David Meirhofer David G. Meirhofer (June 8, 1949 – September 29, 1974) was an American serial killer who committed four murders in rural Montana between 1967 and 1974 — three of them children. At the time, the Federal Bureau of Investigation was developing a new method of tracking killers called offender profiling, and Meirhofer was the first serial killer to be investigated using the technique. Offender profiling is a method used to learn clues about the characteristics of an unknown killer from evidence at the scene of the crime and establish their behavioural patterns before they reach the height of their criminality.