I just talked to my buddy a Vietnam Vet with many near death experiences and who has practiced just about every religion out there as well having a great knowledge of history. He right away thought of shadow people. However I explained the light thing and he mentioned alternate universes, portals through time and some other cool stuff.
I analyzed the room based on my artist knowledge of light and shadow, things you need to know so you can draw and paint.
What I'm showing as a "portal" could just be the window at the top of the stair landing which I forgot to show in the first sketch. If the sun or some car headlights reflected off something and into our house, but there was an object in the way as the car turned, we just maybe I have an explanation – it’s a real stretch either way.
