New Card Monte

BEFOREHAND place in your right trousers pocket a double-faced card, AH-KD.
To begin the trick openly take from an unprepared pack the AH and the KD and place in spectator's side coat pocket. Remove the AH and put it in your right side trousers pocket under the KD side of the double-faced card. Ask the spectator which card is left in his pocket. 'The KD,' he replies. 'Correct,' you say and bring out the double card, the AH side showing. Put this card in his pocket as the AH, turn it and bring it out as the KD, putting it back in your trousers pocket.
Ask him which card is now in his pocket and he naturally says, 'The AH.' Bring the AH from your pocket and throw it on the table. He finds the KD in his pocket. The two cards are perfectly ordinary and the double card remains snugly in your pocket.