A very clever card trick with a triple effect ending!  You show a pack of cards that all have different backs.  You explain that you have placed a prediction inside the card wallet on the table.  A spectator is asked to picture the face of a clock and mentally select one of the hours and then take that many cards off the pack and hide them while your back is turned.  When you turn around you count out 12 "hours" worth of cards off the pack and placed them in a circle as a clock.  The spectator now reveals their hour and you point to the card at that position of the clock.  You place it in the center and open the wallet.  Inside is the duplicate backed card... the only card in the pack with a duplicate back!  Now you turn them both over and the fronts match as well!  Finally all of the rest of the cards are turned over and not only are they different from the matching fronts of the chosen cards but they are all duplicates of each other!  You spectator selected the only one in the deck that is not a duplicate!  Click on the video below!