Double Back by Jon Allen is his own personal take on Dr. Daley's Last Trick, and by far my absolute
favorite version of the effect. The way you openly show the cards before and after the effect is not
only a major selling point, but absolutely amazes the spectators even more. My version came with a
Five of Clubs, Five of Hearts, King of Clubs and King of Hearts. After fairly showing both the Five
of Clubs and Five of Hearts you give them to be held by the spectator. Next, which is my favorite
part, you openly show both front and back of the King of Clubs and King of Hearts.
To the
spectators, nothing can be more fair than that, that they are holding both of the 5's (or so they
think!) and that you clearly show that you're holding both of the Kings. Then placing the Kings back
together, face to face the spectators absolutely think you still have the Kings, some people have
even bet money (which I strongly advise not to do).
Then with a magic twist, you are now
holding both of the 5's and the spectators are now holding onto the Kings. The premise for this
effect is now 100x stronger thanks to the genius of Jon Allen. Although he did draw inspiration from
an effect called Slither by Mark Mason, which I highly suggest checking out because it too is
practically the same, but still packs an extremely powerful punch.
Do not miss the
opportunity to purchase this effect, because you'll be performing it every night, just as I do and
it never, ever gets old!