Shape-shifting alien creatures. Sinister robots cloaked in human flesh. Demons wearing the faces of your family. Works of science fiction for most of us, but for some, a horrifying reality. We have entered the realm of the Body Snatchers. Join us as we investigate some truly bizarre accounts of doppelgangers, evil twins and ghostly replicas, and explore the eerie myths and legends that inspired some of the most terrifying sci-fi movies of all time.