How to Perform the ultimate professional jazz aces card trick

This video shows the viewer Andy Fields 'Ultimate Professional Jazz Aces'. The trick starts with 4 queens' face down on the table. Next 4 black cards are selected. Seemingly these cards are made to change places with the queens' one at a time. This is supposedly done simply with a flick of the wrist. After all of the queens have been swapped the viewer is led to believe that the queen must be lying face down in a pile and that the black cards must be in the magicians hands. However on closer inspection the cards in the pile are actually aces!

For more information and a demonstration please see the video.