91

https://en.wikipedia.org/wiki/Andrew_Urdiales
https://www.swordandscale.com/listen/episodes/Sword-and-Scale-Episode-139
https://wondery.com/shows/48-hours/episode/12233-the-one-who-got-away/
https://www.britannica.com/biography/John-Wayne-Gacy
https://www.crimelibrary.org/serial_killers/predators/andrew-urdiales/loner.html
https://www.123helpme.com/essay/Andrew-Urdiales-256431
ps://fr.findagrave.com/memorial/237839494/robin-brandley
https://wickedwe.com/andrew-urdiales/
https://www.crimelibrary.org/serial_killers/predators/andrew-urdiales/denise-maney.html