Let me explain a bit better....
In regard to the image file that you provided.... guests are looking into a three sided box. Extending from the two rear corners of the box are two mirrors of equal size that meet in the dead center of the box. The mirrors are aimed outward and reflect the sides of the box toward the guests making them think that they are looking into an empty box. Add the skeletal torso in the middle where the two mirrors meet and you have covered up the area where the joint meets. Add your actor behind the mirror along with any extra costuming and you have achieved the effect! It's a very simple effect actually, but very effective nonetheless. I am planning on marketing several versions of this effect for the 2007 season along with a few dozen other magical illusions that can be utilized in haunted attractions.
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