The Tylenol Murders: A Look Back At The Story. CBS. Feb 5, 2009.The 1982 Tylenol poisoning murders returned to the headlines in February 2009, when the spotlight shined once again on a suspect who has been associated with the case almost ever since the murders happened, but never charged with the killings.More than a quarter century after the fact, the cyanide poisonings remain one of the most infamous crimes in Chicago history. [ See ]. Watch also related videos in same Web.