John Kennedy has created something special. Card through window is one of the most well know effects
(thanks to Blaine) and it's the one trick that will probably get you your best reactions of your
whole magic career. There are a lot of cons to this trick but if you can get around them then it's
well worth it.
The set up does take a fair amount of time to set up but just do it well
before hand and you'll be good. Make sure it's not the first trick that you do either to avoid
suspicion. Even then, because you reveal it as a prediction people don't think much of it.
The price is high but if you are serious about learning a trick that will make your reputation
huge, this is it.