Death -- The ghost encounter -- What is a ghost? -- Folklore and legends -- Possession -- Animal spirits -- Psychic abilities -- Skeptics -- Paranormal investigation -- Where are the ghosts?.
Summary
What lies beyond the veil? Figure that out and you unlock the key to the universe... or at the very least you'll have a good story to tell. Ghost events are perceived as real by millions of people, which means the existence of ghosts has been proven to millions on an individual basis.