The Tylenol murders, which occurred in the Chicago metropolitan area in 1982, involved the poisoning deaths of seven people who consumed Tylenol capsules laced with potassium cyanide. Despite extensive investigations, no one has ever been charged or definitively identified as the perpetrator of these murders. The primary suspect was James W. Lewis , who sent an extortion letter to Tylenol's manufacturer demanding $1 million to stop the killings, but he was only convicted of extortion, not the murders themselves. Lewis denied being responsible for the poisonings, and DNA evidence later was not linked to him. He died in 2023 without having been charged for the murders.

The murders led to nationwide panic, a massive recall of Tylenol products, and significant reforms in packaging and federal anti-tampering laws for over-the- counter medications.

Key points:

• Seven people died after ingesting cyanide-laced Tylenol capsules in late September 1982.
• James W. Lewis was considered the primary suspect but never charged with murder.
• His extortion conviction was related to a letter demanding money from Johnson & Johnson.
• The suspect's identity has never been conclusively established, and the case remains officially unsolved.

If you want, I can provide more detailed information on the victims, investigation, or impact on drug safety regulations.