In this episode Kat tells Logan the story of Carroll Edward Cole, a man who claims to have killed 35 people, and was executed in 1985 after being found guilty of 4 counts of first-degree murder.

http://maamodt.asp.radford.edu/Psyc%20405/serial%20killers/Cole,%20Carroll%20-%202005.pdf

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

https://murderpedia.org/male.C/c1/cole-carroll-edward.htm

https://www.nytimes.com/1985/12/07/us/confessed-murderer-of-13-is-executed-in-nevada.html

https://law.justia.com/cases/nevada/supreme-court/1985/16070-1.html