In September of 1982, a total of seven individuals collapsed and eventually died minutes after taking the number one over the counter pain reliever, Tylenol. After three deaths within the same household, doctors grew suspicious of the cause. How can three people die for no apparent reason? After hearing about a similar death in a different county, the only thing tying the deaths together was the batch number on the Tylenol container. After testing, it was determined that the pills had been laced with cyanide. Forty years and a total of seven victims later, we have yet to find the person responsible for the poisoning.