Okay so I had performed magic for five years now and I have learned many big secrets! But one effect I still can't figure out is so incridible good. The effect is based on a spectator that thinks of a card (or another thing like a name) and without saying anything or touch anything you the magician can tell everybody what he/she is thinking of. So my question is does anyone know this effect? If so what is it called an where can I learn it? Does it exist any book or dvd about the effect? Tell me!