EFFECT: The performer displays a cloth mat and two drinking glasses. He borrows a ring from a spectator and places it under one of the inverted drinking glasses. Then, in the cleanest possible manner, the ring vanishes completely and reappears under the other glass!
You receive a devious magical device that effortlessly and invisibly moves a borrowed finger ring or marked coin from under one glass to the other.
Just how sneaky is There & Back? Well, when David explains the method to magicians and then performs it, they are fooled a second time - even after they know the secret! David has used this outstanding routine to close his Magic Castle shows for many years and Paul Daniels performed it on one of his TV specials in England.