The Candyman - Halloween Candy Craze

https://www.aetv.com/real-crime/the-man-who-killed-halloween

https://www.snopes.com/fact-check/halloween-non-poisonings/

https://jclass.umd.edu/archive/newshoax/casestudies/crime/CrimeHalTim7.html

https://www.statesman.com/news/20161014/35-years-later-memories-of-notorious-halloween-candyman-murder-remain-vivid

https://www.ctpost.com/news/article/Man-Who-Ruined-Halloween-Recounting-the-14663666.php#photo-7073983

https://murderpedia.org/male.O/o1/obryan-ronald-clark.htm

https://www.vice.com/en/article/8ge87v/halloween-killer-ronald-clark-o-bryan-candy-man

https://groovyhistory.com/razor-blade-apple-halloween-candy-urban-legend

https://www.psychologytoday.com/us/blog/the-human-equation/201510/the-men-who-murdered-halloween

https://www.snopes.com/fact-check/pins-and-needles/

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