Description from original post (created 2012-02-19 17:40):
Shadow people are supernatural shadow-like humanoid figures that, according to believers, are seen flickering on walls and ceilings in the viewer's peripheral vision. They are often reported moving with quick, jerky movements, and quickly disintegrate into walls or mirrors. They are believed to be evil and aggressive in nature, although a few people consider them to be a form of guardian angel.