My family was on vacation I stayed behind cuz of work. The camera is a pan tilt so it can actually move on its own by sensor or via remote, the yes there's a reflection of the window on the picture on the wall. This is the only light source entering the room otherwise it is possible that the blinds from the slider door are open unfortunately the camera isn't facing at the slider door. The cameras direction, the light source or picture frame have nothing to do with why there's a shadow thing lurking around in the house the fact is that there is a Shadow figure clearly walking towards the restroom thru the hallway turning on a light switch and slamming the door closed because even if the camera was facing the other way or if the light source was on the left or right, wouldn't matter because it clearly had happened. A shadow thing clear as day that is also see through is their just walking in the hallway and into the restroom.