6. Until the End of Murder: A Cantankerous Killing Couple

Ray and Faye Copeland appeared to be a simple, elderly farming couple in rural Missouri, known for their hard work and unassuming nature. However, beneath this façade, they orchestrated a series of chilling crimes. The Copelands hired transient workers to help on their farm, but instead of providing employment, they used these workers in their fraudulent schemes, ultimately leading to their murders. The isolated location of their farm allowed their activities to go undetected for years. Despite initial disbelief from the community, mounting evidence eventually led to their arrest and conviction, making Ray and Faye the oldest couple ever sentenced to death. 

Sources:

https://www.thoughtco.com/serial-killers-couple-ray-faye-copeland-9727

https://allthatsinteresting.com/serial-killer-couples/2

https://www.nydailynews.com/news/crime/case-vanishing-vagrants-article-1.220343

https://en.wikipedia.org/wiki/Ray_and_Faye_Copeland

https://criminalminds.fandom.com/wiki/Ray_and_Faye_Copeland

https://medium.com/@delanirbartlette/senior-citizen-serial-killers-ray-faye-copeland-83a83b0feac0

Senior Citizen Serial Killers: Ray and Faye Copeland by DeLani R. Barlette

http://dksale.net/2016/08/29/ray-and-faye-copeland-were-framed-for-murder/

https://www.stltoday.com/news/local/crime-and-courts/how-an-amateur-sleuth-and-rock-musician-became-a-player/article_2712c540-5fcb-58bd-a51c-8e339c7af006.html

http://maamodt.asp.radford.edu/Psyc%20405/serial%20killers/Copeland,%20Ray%20_spring,%202006_.pdf