It was a seemingly normal morning, In September of 1982 for the Kellerman family.

12 year old Mary Kellerman woke up complaining to her parents that she wasn’t feeling well, so they gave her some extra strength tylenol and decided to keep her home from school.

Little did anyone know this would mark the beginning of a series of poisonings that still remain unsolved to this day.

The Chicago Tylenol Murders were a series of poisonings in which seven people would sadly end up passing away due to cyanide poisoning after taking Extra Strength Tylenol capsules in 1982.

This tragedy remains unsolved and would spur the development of plastic seals and tamper-evident packaging which we see today.