Watchful Witness By Ron Frost

5 jumbo cards are displayed. All being of the same suit and lined up in numerical order, from ace to 5. The spectator is to place a clothes pin on the center card after the cards are turned face down. Time and time again, the person fails to pick the correct card. then one card is placed aside, and only 4 cards are used. again the person tries to clothespin the 3. when the clothespin card is turned over, it is now a card having the words " 3 of diamonds" finally the other 3 cards are turned over and they have changed into actual threes.