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.

The Dark Side of Frank Lloyd Wright, Part Two: Mass Murder, Cults, and the FBI
34:39

The Dark Side of Frank Lloyd Wright, Part One: Professional Success and Personal Turmoil
44:48

CLASSIC: Patriots, Prisoners and Plants: The World of Political Body Doubles
50:08