In 1976, a California man returned home after a long day at work and killed his entire family, including his wife, mother, and three sons. The killer, Bradford Bishop, immediately went on the run and has never been caught. His motive for the murders remain a mystery.
On April 10, 2014, the Federal Bureau of Investigation (FBI) placed him on the list of its Ten Most Wanted Fugitives.
On June 27, 2018, Bishop, who would have been 81 years old, was removed from the list, making room, the FBI said, for a "dangerous fugitive". However, he is still being actively pursued by the FBI.
It has been reported that Bishop's career had caused some marital tension. He was unhappy at his desk job and interested in another foreign posting, but his wife Annette was reluctant.
She had begun to study art at the University of Maryland despite Bishop's desire for her to remain a stay-at-home mom.
Source: wikipedia.com