Preparation: You’ll need four cards. It’s usually best to use three cards that look somewhat alike or are the same, and one that contrasts with the others. In this case, we’ll use three red number cards and a black face card, the King of Spades.
Cut the corner off of the card that you will display in the middle. To obtain this corner, which is the secret, you’ll want to use one of the “alike” cards.”
