The 8 Scariest Episodes of Buffy the Vampire Slayer Ever

Magic never, ever comes without a cost. The group learns this the hard way when they use magic to bring Buffy back to life in season six's two-part premiere, only to discover in After Life that a dark traveler has hitchhiked their way back to earth with the slayer. The evil spirit has the ability to inhabit the bodies of those it jumps between, hence the whole Anya-slicing-her-face thing. Not pretty.