Shadow people. An artist's impression of a shadow person as a paranormal entity A shadow person (also known as a shadow figure, shadow being or black mass) is the perception of a patch of shadow as a living, humanoid figure, particularly as interpreted by believers in the paranormal or supernatural as the presence of a spirit or other entity.[1] Many methamphetamine addicts report hallucinations of "shadow people", as a result of sleep deprivation.
History and folklore[edit] 16 Signs That Your House is Haunted. How do you know if that persistent rapping on your walls is bad plumbing or a mischievous spirit?
Here are some of the signs of a haunting You hear heavy footsteps in the upstairs hallway when you know no one is up there. Doors slam unaccountably. Commonly used items disappear and reappear without cause.