Numerous stories about afterlife, numerous explanations about what's happening with the soul when people die, when people sleep, when people are in coma... Some of them are scientific explanations, some are religious but all of them insinuate that there is something, but what is that something still is not known, or at least is not spread around. One of those stories says that when a person dies, if he or she hasn't fulfill all of his or her aspirations or has some unfinished job, some untold words to someone, the soul stays here between us until that issue is completed. That is usually the explanation when some paranormal things happen and those sights are usually called ghosts.
Instructions: See instructions in the game.