im glad you're alright! how was it and are you still feelin weird? :O im back from grand rapids now. it was one of the best weekends ever! but anyways, i'll chat with ya later. :]
If it is daylight hours then it is the sun. There is window directly across from te staircase so yourmost likely seeing that. If it is at night then it may be paranormal related cause usually at night there are no lights on.