10/30/2014 - On this Halloween special, the History Guys explore Americans' relationship with ghosts, spirits, and witches throughout our nation's history. Why were colonists so fearful of New England "witches"? How is it that progressive social reformers found a home in the Spiritualist movement of the 19th century? Why do new media technologies always conjure talk of the undead? Can social upheaval help explain our history with the ineffable?