One bit a woman, leaving puncture wounds all over her body. Another
attacked the contents of a warehouse full of glasses and mugs. Yet
another lifted furniture into the air, then sent objects flying in
another house. These are some of the strange and sometimes terrifying
cases collected by poltergeist investigator William Roll. A
parapsychologist, Roll studies these "noisy ghosts" to understand what
they are and why they do what they do.