Is it possible that such a thing as a "ghost" exists? Not the scary scooby doo type ghosts, but some sort of lingering remains that could haunt or protect over. My friend's aunt claimed her whole life to be able to see angels and demons, with the angels the only thing holding back the demons from getting to us humans. She is one of many that I have heard about with this sort of thing. It's in the same ballpark as the ghost question, can these things possibly exist?