Keith

"I: The Creation of a Serial Killer" av Jack Olsen

https://www.nbcbayarea.com/news/local/happy-face-killer-victim-id/2885050/

https://www.cnn.com/2024/01/14/us/happy-face-killer-unidentified-victim/index.html

https://thecrimereport.org/2013/12/19/2013-12-the-happy-face-killer-strikes-again/

https://www.law.umich.edu/special/exoneration/Pages/casedetail.aspx?caseid=3536

https://www.biography.com/crime/keith-hunter-jesperson

https://www.oxygen.com/crime-news/all-about-the-real-life-happy-face-killer-keith-jesperson

https://unidentified-awareness.fandom.com/wiki/Patsy_Skiple

https://sv.findagrave.com/virtual-cemetery/617650?page=1#sr-42095461

https://abcnews.com/US/happy-face-killer-case-tapes-reveal-lengths-woman/story?id=80909504

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