Not to Cheat is a demonstration of cheating.
The spectator choose four cards totally at random and puts face down between two Red Kings with are face up.
Then the spectator puts all on top of the deck.
After the magician cut and shuffle only one time, the cards between the red Kings now are the four aces! With only one shuffle, the magician manage to switch the four indifferent cards with 4 aces!
It is an incredible demonstration of cheating.