A cabinet mounted on four legs is wheeled out onstage. The audience can clearly see its emptiness due to the open front and back, and the audience being able to see all the way through the cabinet. The magician closes the curtains of the cabinet and spins it around. When he reopens it, his beautiful assistant has appeared inside.
 
This simple and easy-to-perform magic illusion provides an attractive and startling appearance of a person. It may be performed surrounded and is the idea ideal way to produce a special guest or dignitary. Called the "Jam Box" by Harry Blackstone Senior's assistants, variations on this illusion are available.