The discussion centers around the infamous 1982 Tylenol poisonings that resulted in seven deaths due to adulterated capsules. The mystery surrounding the case is reignited by a Netflix docu-series exploring the events, with a focus on alleged inconsistencies in Johnson & Johnson's claims regarding factory contamination. Commenters highlight the apparent contradiction in J&J's statements about cyanide testing and raise the potential for modern genetic tracing technologies like MyHeritage and 23andMe to provide new leads in solving the case.