From that cheerful puff of smoke known as Casper to the hunkiest potter living or dead, Sam Wheat, there is probably no more iconic entity in supernatural history than the ghost. And these are just recent examples. From the earliest writings such as theEpic of Gilgameshto today's ghost-hunting reality TV shows, ghosts have chilled the air of nearly every era and every culture in human history. In this book, Lisa Morton uses her scholarly prowess—more powerful than any proton pack—to wrangle together history's most enduring ghosts into an entertaining and comprehensive look at what otherwise seems to always evade our eyes.Tracing the ghost's constantly shifting contours, Morton asks the most direct question—What exactly is a ghost?—and examines related entities such as poltergeists, wraiths, and revenants. She asks how a ghost is related to a soul, and she outlines all the different kinds of ghosts there are. To do so, she visits the spirits...