" Jim’s situation underscores a basic question in paranormal science—does a person have to know he or she is dead to move on? If a person dies so suddenly that he never saw it coming and therefore doesn’t know he’s dead, does his spirit wander the Earth in limbo until he comes to the realization that he’s no longer among the living? This is a prevailing belief among paranormal investigators. "

― Zak Bagans , Dark World: Into the Shadows with the Lead Investigator of The Ghost Adventures Crew