RE: A "Haunted" Haunted House? –
The head of Louisville Paranormal Investigations has told me that due to the fact that spiritual entities tend to create an electrical disturbance when they appear (hence the "tingling" feeling that some people experience in haunted locales) they in turn feed off of atmospheric electricity generated by impending thunderstorms or will drain the power from camera batteries and recording devices. I've personally sat in on a few investigative sessions where freshly charged batteries would be placed in a camera, only to have it go totally dead mere minutes later.
"We all go a little mad sometimes..."
- Norman Bates