I am a private investigator and just wanted to tell you that video cameras may not be as expensive as you think. It's too bad I'm not closer as I could help you find what you need, probably for a minimal cost, but it's hard to know what you need without actually looking at the area and what needs to be covered. However, I suggest you go to Radio Shack (if you have them there, that's the best place to go in my opinion) or Best Buy; or any electronics store really; there you can get a clerk to help you and you can describe to them what you need; failing that, look on line, you might be surprised. It's just if you buy on line, you can sometimes get hosed by accidentally buying cheap stuff, if you don't know what you're looking for. If you decide to do it that way try to pick a reputable site that has a clerk to help you. I would highly suggest that you look into it, though; it sounds like a scary situation and would give you some peace of mind. If you really can't afford that, look at buying a dummy camera or two to mount in a high profile area; that just might scare whoever it is away and generally are cheaper than the real thing.