00:00 The Tylenol Murders in Chicago in 1982 are the focus of this true crime episode.

04:35 In 1982, a series of deaths caused by poisoned Tylenol in Chicago captured the nation's attention.

09:21 On September 29th, 1982, a 12-year-old girl named Mary Ann Kellerman died after taking an extra strength Tylenol for a sore throat, followed by a 27-year-old man named Adam Janus who died after taking two extra Tylenol for chest pains, both deaths were initially believed to be heart attacks.

13:51 In a short span of time in the Chicago area, seven people died after taking Tylenol, including a flight attendant who was found dead in her apartment with an open bottle of Tylenol.

18:33 In the Chicago area, seven people died after taking Tylenol capsules that were filled with potassium cyanide instead of acetaminophen.

23:39 Within a few hours of the first death, people in Chicago were already suspecting that something was wrong with Tylenol and the mysterious deaths, and within a few days, they had connected the dots and realized that the Tylenol had been tampered with.

28:10 The investigation into the Tylenol murders was initially led by fire captain Philip Capatelli and public health nurse Helen Jensen, who were able to convince others that there was something wrong with the Tylenol, leading to panic and widespread concern after a press conference by Cook County's Deputy Chief Medical Examiner, Dr. Edmund Donahue, advising people to stop taking Tylenol.

32:37 The press conference led to Tylenol being removed from the Chicago area and the story went worldwide, causing panic and fear, with copycat incidents of product tampering popping up all over the country.

37:23 The Tylenol Task Force was formed, involving local investigations, the FBI, the Illinois State Police, the FDA, and the Illinois District Attorney's Office, to investigate the product tampering incidents and they found more contaminated Tylenol on store shelves within a 50-mile radius of where the initial deaths occurred.

42:58 The Tylenol Task Force and Johnson & Johnson settled on the Mad Poisoner Theory, believing that someone went around the Chicago area, bought Tylenol, poisoned it, repackaged it, and redistributed it, but the motive behind the tampering remains unknown.