addition of tamper-evident safety-seals to bottles of many sorts. 1982 Halloween While poisoned candy being given to trick-or-treaters at Halloween is rare, the Tylenol incident, which unfolded across October 1982, raised renewed fears of it. Some communities discouraged trick-or-treating for Halloween, and American grocery stores reported that candy sales were down more than 20%. See also List of unsolved murders References Further reading Bergmann, Joy (November 2, 2000). "A Bitter Pill – Someone Killed Seven People by Putting Cyanide in Tylenol Capsules – When James Lewis Was Caught for Writing an Extortion Letter, Prosecutors Appeared To Stop Looking for the Killer – Almost 20 Years Later No One Has Been Convicted of the Murders". Chicago Reader. Retrieved May 19, 2011. Solomon, Michael (July 13, 2022). "Poison Pill". Medium. Retrieved July 14, 2022. External links 1982 in Illinois 1982 murders in the United States 1980s in Chicago Adulteration Crimes in Chicago Cyanide poisoning Drug safety Health disasters in the United States Johnson & Johnson Mass murder in 1982 Mass poisoning Murder in Illinois Product recalls September 1982 events in the United States Unsolved mass murders in the United States