The Chicago Tylenol Murders

On the morning of September 29, 1982, a twelve-year-old girl named Mary Kellerman woke up feeling sick in her family’s home in Elk Grove Village, a suburb northwest of Chicago. She had a sore throat and a runny nose. Her parents gave her a capsule of Extra-Strength Tylenol, the most popular pain reliever in America.

Within hours, she was dead.

That same day, in nearby Arlington Heights, a twenty-seven-year-old postal worker named Adam Janus took Tylenol for chest pain. He collapsed and died. That evening, as his family gathered at his house in shock and grief, his younger brother, Stanley, and Stanley’s wife, Theresa, both had headaches. They took Tylenol from the same bottle Adam had used. Both of them collapsed. Both of them died.

Over the next two days, three more people in the Chicago area died after taking Tylenol: Mary Reiner, a twenty-seven-year-old mother who had just given birth to her fourth child; Mary McFarland, a thirty-one-year-old mother of two who worked at a telephone store; and Paula Prince, a thirty-five-year-old flight attendant, who was found dead in her apartment with an open bottle of Tylenol nearby.

Seven people were dead. And Chicago was in a panic.

Cyanide

Two firefighters in the suburbs, comparing notes on the deaths, noticed that the victims had all taken Tylenol. Investigators tested the bottles. Inside some of the capsules, instead of acetaminophen, they found potassium cyanide — a fast-acting poison that kills within minutes by preventing the body’s cells from using oxygen.

Each bottle came from a different store. The capsules came from different production batches made at different factories. That told investigators something crucial: the poison hadn’t been added at the factory. Someone had bought or stolen bottles of Tylenol from stores, carried them away, opened the capsules, filled them with cyanide, put them back in the bottles, and returned them to store shelves, where innocent people bought them.

Anyone could have been the next victim.

Panic

The news spread across the country within hours. Police drove through Chicago neighborhoods with loudspeakers, warning residents not to take Tylenol. Television and radio stations broadcast warnings. Hospitals were flooded with calls.

Johnson & Johnson, the company that made Tylenol, took the extraordinary step of recalling every bottle of Tylenol in the country — about thirty-one million bottles, worth more than a hundred million dollars. It stopped all advertising. It offered to replace capsules with tablets for free. Business schools still teach the company’s response as a model of how to handle a crisis.

Copycat crimes followed in other parts of the country, as people put poison or other substances into food and medicine. The fear was everywhere.

The Extortion Letter

A few days after the murders, Johnson & Johnson received a letter demanding a million dollars to “stop the killing.”

Investigators traced it to a man named James W. Lewis, a former tax preparer with a history of fraud who was living in New York City. Lewis was arrested and convicted of extortion. He spent more than twelve years in federal prison.

But Lewis always denied that he had anything to do with the poisonings themselves. He said he’d written the letter only to embarrass a former employer. Investigators were never able to place him in Chicago at the time of the murders, and he was never charged with them. He died in 2023, still denying involvement.

Other Suspects

Investigators looked at many other people over the years. One was a dockworker in Chicago who had an interest in chemicals and was investigated after a tip; he was cleared of the poisonings, though he was later convicted of an unrelated killing. Investigators looked at people who had worked in stores where the bottles were sold, and at people with grudges against Johnson & Johnson.

The case has been reopened and reviewed several times over the decades, as forensic science advanced. Investigators have retested evidence for DNA. No one has ever been charged.

Safety Seals

The Tylenol murders changed the way Americans buy medicine, forever.

Before 1982, most over-the-counter medicines were sold in simple bottles with screw-on caps that anyone could open and close without leaving a trace. After the murders, manufacturers began adding tamper-evident packaging: foil seals under the cap, plastic shrink-wrap around the neck of the bottle, and outer boxes that are glued shut. Capsules were redesigned or replaced with caplets and gel caps that are harder to tamper with. In 1983, Congress passed a law making tampering with consumer products a federal crime.

Every time you peel the foil seal off a new bottle of medicine, you’re seeing a legacy of those seven deaths.

The Seven

I want to end with their names, because I think they matter more than any suspect’s.

Mary Kellerman, twelve. Adam Janus, twenty-seven. Stanley Janus, twenty-five. Theresa Janus, nineteen. Mary Reiner, twenty-seven. Mary McFarland, thirty-one. Paula Prince, thirty-five.

They did nothing more dangerous than take a pill for a headache or a cold. Someone, somewhere, decided they would die for it. That person has never been caught.