31 million: The Tylenol recall linked to a new Boise suspect

Mathew Betkouski is now a named suspect in the 1982 Tylenol murders, a development that has reignited one of the most famous unsolved cases in American history. The identification stems from a separate cold case in Boise, Idaho, where a man died by suicide in a church on December 4, 1982. For decades, investigators referred to him as the Unknown Wanderer.

The original crime occurred in late September 1982 in the Chicago area. Seven people died after swallowing capsules laced with potassium cyanide. The first victim was 12-year-old Mary Kellerman, who died on September 29, 1982. Six others died within the next three days. The incident forced Johnson & Johnson to recall 31 million bottles of Tylenol capsules nationwide and led to the standardization of tamper-resistant packaging for over-the-counter drugs.

Ada County Cold Case Detective Tim Cooper reopened the Boise suicide case in 2019. He reexamined evidence collected from the scene, which included nearly 30 keys found in the victim's pockets. One key led investigators to a property in Jacksonville, Florida. Property records identified the missing owner as Mathew Betkouski, a scientist with a Ph.D. in organic chemistry who disappeared in 1982. DNA testing confirmed the match.

Betkouski worked for Lockheed Martin on a NASA-related project at White Sands, New Mexico. Former coworkers recalled conversations he held before the Chicago poisonings. One coworker stated that Betkouski discussed a method for removing medicine from pharmacy shelves, poisoning it, and returning it undetected. She recalled him mentioning potassium cyanide and a medication similar to Tylenol.

Investigators found additional circumstantial links. They discovered cyanide among Betkouski's belongings, a map of the Chicago area, and correspondence from 1981 indicating he planned to travel to the region in 1982. Dr. Park Dietz, a forensic psychiatrist who consulted on the original case, now believes Betkouski fits the killer profile. Dietz told Idaho News 6 that he is convinced Betkouski was responsible, though he acknowledges the evidence is circumstantial.

The theory faces a major hurdle regarding location. Investigators cannot place Betkouski in Chicago during the final week of September 1982, when the capsules were tampered with. When asked about the strongest argument against the theory, Cooper asked, "Can you put him there the final week of September 1982?" That missing timeline remains the primary obstacle to linking the Boise suicide to the Chicago murders.

Not all experts agree with the new direction. Jeremy Margolis, a former federal prosecutor on the original task force, dismissed the theory. He called it "utter nonsense" and argued that criminal profiles are not evidence. Margolis believes the original investigation identified the right suspect but has declined to name that person publicly.

The debate has intensified calls for transparency. Idaho News 6 requested investigative records, including historical case materials and presentations. Most requests were denied due to exemptions related to the active FBI investigation. Both supporters of the Betkouski theory and those favoring alternative suspects agree that more records should be released to the public.

Ada County investigators are currently seeking information on Betkouski's whereabouts in the months before his death. They are asking anyone with knowledge to send tips to ACSOtips@adacounty.id.gov. The case remains active, and the search for a definitive answer continues.