Mass Hysteria and the Mad Gasser

Did a masked madman terrorize a sleepy Illinois town with a paralyzing gas gun? Or did something equally bizarre transpire back in August of 1944? Lend an ear to this bone-chilling episode of Stuff to Blow your Mind and explore the topic of mass hysteria (AKA mass psychogenic disorder), from dancing plagues and witch trials of old to our modern age of bioterrorism.