Effect:
A magician is handcuffed by a member of the audience. He is then placed in a sack, the mouth of which is tied, above his head by any person present. The bag with the magician is placed into a curtained endclosure. The magician's assistant enters the curtained enclosure and at the count of three, the curtains are drawn away. To the utter surprise of everyone present there, the performer emerges free and his assistant is found tied inside the sack only which three seconds ago was occupied by the performer.