Chicago Surprise book Whit HaydnPlot: A red backed card is freely selected from a red backed deck. The back of the chosen card changes color to blue so that it is easily found. The blue backed card is placed under a saltshaker, the spectator's finger, or even under the spectator's foot. Another red backed card is then selected from the deck. The magician, merely by snapping his fingers, changes the face of the blue backed card to match the face of the second freely chosen card! This