X Ray Vision Magic Trick

A jaw dropping trick that will stun your friends! The object of this trick is to cut a pack of cards into three face down piles. You then gaze at the three piles for a few moments in total concentration and correctly name the top cards of the three piles.

Here is how the trick is done.
Before you start the trick you must know the name of the top card of the pack, which is easy to find out. Simply glimpse at the top card as you spread the pack to show the spectator that it is an ordinary pack of cards!
Now put the pack of cards face down on the table and ask the spectator to cut it into three roughly equal piles, keeping all the cards face down. As the cards are being cut you must keep track of the pile with your known card on top, let's say the "King of Spades".
You now say to the spectator"I have x-ray vision. I have enough of this x-ray power to see through paper and other materials to a depth of about a millimetre, which is just about deep enough to read through a playing card, most of the time!"
Now tell the spectator to write down on a piece of paper each card that you have seen with the "x-ray vision" so that no mistakes can be made.
Now point at one of the piles (not the one with your known card on top), frown for a second and say "That card is the King of Spades" Lift the card up from the pile with your left hand without the spectator being able to see the face of it, smile as if you were right and remember the card (let's say its the five of diamonds) and keep it hidden in your right hand.
Now point to the other pile with the unknown card on top and say, "That card is the five of diamonds" Lift the card up with your left hand and look at it again smiling confidently. Remember this second card, let's say it's the "Jack of Hearts" and hide it with the first card in your other hand.
Now look at the third pile (the one with the King of Spades on top) and say, "That card is the Jack of Hearts". Lift up the card and smile again as you look at it and then place with the other two cards.
Now ask the victim "What cards did you write down?"
As the victim reads out the names of the cards you turn them over one by one showing that you do indeed have x-ray vision!