you get a one way mirror (the ones in police stations) and you put a camera behind it looking through the bit you can see through, then about 2 feet in from of that one way mirror is a normal reflective mirror, with the reflective side facing the reflective side of the one way mirror. assume the angle of the camers is straight, there is a light source in the room, and a monkey playing the piano? what do you think you would be able to see throught the camera?
some theorys: