Here's a simple and automatic, yet highly effective, way to get four of a kind using the Fulves “Gemini Twins” concept. 


Have three Queens on top of the deck and one on the bottom.

1. Give the deck to a spectator and ask him to deal three piles of cards and to stop at any point. They don't need to be equal and he can deal randomly, back and forth, etc., but only after he's dealt the first three cards in a row to begin.

Tell him to turn the top of card of each pile face up. Now tell him to drop the deck onto any pile - pick that lot up and drop it on another pile - then drop all on the last pile.


2. The deck is given to a second spectator. Tell him he will only reverse one card and this will be the "control card." He deals a single pile and stops after a dozen or so (he must not reach a face up card) - turns the top card of the pile face up and drops the deck on top.


3. Spread the deck across the table and remove the four face to face pairs. Turn over the face down card on the "control card" (left hand pair) revealing a Queen. Tap the other three face down cards then turn these over to finish with four Queens.