I live in a pre-Civil War brick house, built in 1857. Since we moved here we have experienced some really strange things. So in deference to my wife, I purchased a spy camera and aimed it in the vicinity of many of the strange occurances. The first spy camera made over 900 shots before it gave out. Almost all of those shots simply show the interior of our house. And the camera is only supposed to activate if there is movement in its range. I bought a second camera and have set it up in a similar fashion. So far I have over 100 shots on it, most of which just shows the house interior. There are a few shots of my wife and I moving through the active scan. My question is, What activates these cameras when there is nothing moving to be seen. Yes I did get four rather strange shots that we are still trying to find an explaination for.