so this quite possibly is in the wrong part of this forum, but hopefully if it is someone will direct me elsewhere. my question is regarding the show sweeney todd, i do not know if anyone has experienced working on this show but there are some very complex design issues that i have come in contact with. one of which is designing sweeney's chair in his barber shop. essentially he is supposed to murder his customer, the chair is supposed to flip through a floor board and a new identical chair is supposed to appear. my question is whether anyone has any idea as to how to build his shop so that at the very least it APPEARS that this happens, ive been contemplating it for weeks but i have no idea how to go about doing so... if anyone has any ideas i would appreciate it greatly, thank you.