"You show three card, two black 10 and one 3 of diamond.
To make the trick more difficult, you put the card face down on the table.
The backs of the cards, 2 red backs and one black back can be seen.
Then you explain to the audience that the red backed card owns to a young boy, a little mischievous.
The spectator who shows the card will have his finger trapped by the young boy that has vanished the 3 of diamond !!
You just have to imagine what will represent the finger in the card..."