Discovery of Cyanide and Investigation Path

For most people, Tylenol is nothing more than an ol' stand-by, over-the-counter pain reliever. Yet, as Ben, Noel and Max learn in today's episode -- this wasn't always the case. Today's episode takes the boys to 1980s Chicago, when a ghoulish series of still-unsolved murders rocked the pharmaceutical industry, and led to the creation of tamper-proof packaging.

See omnystudio.com/listener for privacy information.