I hope you can get that shadow being on a photo, that would be great.
I have read a lot of info about the shadow being phenomena and would love to see a pic of one.
Do you ever feel threatened by it ?
I've used a sony cybershot 4.2 megapixel camera at a haunted location before and caught plenty of orbs most probably dust in my case but some orbs seem to be more than that, but i suppose a run of the mill one would do if your actually seeing this stuff with the naked eye.
As for a ghost hurting you i couldn't say as i've never encountered one i dont think

i'm sure some of the more experienced people on the forum will be able to give you more info on the answers you seek.
There is a book called the The Secret War by Heidi Hollis she delves into the shadow phenomena and seems to be quite an expert in that field, there is a lot of info on them if you do a google search, also if you look up Heidi Hollis you might find out something that might give you some answers about waht is going on and what you can do about it ect.
Good luck and keep us informed.