The magician shows four transparent bags, takes one of them and puts it on the table. He takes a deck of cards and asks an spectator to take a card, and memorizes it. Then the card is lost in the deck, and the spectator shuffles the cards. Suddenly, the magician throws all the cards over the bag that is lying on the table. One card is stuck on the bag: it is the chosen card! When the spectator tries to take it, he realizes that the card is INSIDE the bag!!! Immediately the magician takes the card from the bag, showing clearly that it comes out from the inside of the bag!!!