In September of 1982, seven Chicago-area residents died mysteriously. One thing they all had in common was that they each took Extra-Strength Tylenol capsules. Their deaths would lead to a shocking discovery of drug tampering, nationwide panic, and a strange game of who done it.

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Sources:
https://www.pbs.org/newshour/health/tylenol-murders-1982

https://www.nytimes.com/1982/10/03/us/100-agents-hunt-for-killer-in-7-tylenol-deaths.html

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

https://www.chicagomag.com/Chicago-Magazine/October-2012/Chicago-Tylenol-Murders-An-Oral-History/

https://www.history.com/news/unabomber-letter-bombs-investigation-arrest