On October 1989, Missouri police received a tip that human body parts could be found on a farm owned by an elderly couple, Ray and Faye Copeland. After digging up their yard they found five decomposing bodies buried in shallow graves. After an autopsy report it was determined that each man had been shot in the back of the head at close range. After reviewing their handwritten list of farmhands there was an "x"  next to the dead farmhands' names.

Ray Copeland was born in Oklahoma during 1914, just as WWI was beginning in Europe. Rays parents, Jess and Laney Copeland, moved around frequently as he was growing up and eventually settled in Ozark Hills, Arkansas. During a routine visit to a physicians office, he met a young girl named Faye Della Wilson. The 19 year old was the daughter of Rufus and Gladys Wilson, a hard working couple from Harrison, Arkansas.

Ray was the mastermind and the urge to kill came from the unresisting urge for cattle. The problem with this was that he didn't have any money. He would pick up homeless people and have them sign fake checks and afterwards when they went missing he would just pick a different person. He did this an unknown amount of time but according to the bodies found on his property he did this at least five times.Both Ray and Faye were sentenced to death by lethal injection.

http://www.crimelibrary.com/serial_killers/partners/copelands/7.html