Doug & Willie

https://www.oxygen.com/charmed-by-the-devil/crime-news/douglas-gretzler-willie-steelmans-killing-spree-of-17

https://tucson.com/news/local/photos-the-steelman-gretzler-murders/collection_6c509ab2-705f-518f-88a2-f44230424af7.html

https://calmatters.org/commentary/2023/11/mass-murder-forever-etched-consciousness/

https://crimesolverscentral.com/serialkillers/606

https://truecrimearchives.blog/douglas-gretzler-the-arizona-california-killing-spree/

https://www.primetimer.com/features/who-was-willie-steelman-all-about-his-crimes-with-douglas-gretzler-as-shown-in-charmed-by-the-devil

https://tucson.com/print/calendar/article_62af602a-be57-5576-9980-3735db0e2734.html

https://law.justia.com/cases/arizona/supreme-court/1980/3750-2.html

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

https://www.independent.co.uk/news/world/americas/crime/doug-gretzler-serial-killer-oxygen-documentary-peacock-b2882187.html

https://www.thesun.co.uk/news/38164285/love-serial-killer-murders-secret-life-death-row-wish/

https://calmatters.org/commentary/2023/11/mass-murder-forever-etched-consciousness/