Question Author
How did he do it, as all magic is done. The cards he gave emma to write on, well lets say the second card had a small bump on the left hand corner, he told her to write a lie on the second card. He now knows the card with the bump on is the lie so no matter how much emma mixes them up when he has them back and handles them he feels for the bump and the lie is on that, but he says he can tell because of her body language which is total bullsh*t.
The watch with Richard, my god I couldn't believe he got away with this one, must be in lucky bags this trick. The guy has cards, bits of paper all over him, had Richard said the time on his watch was 3.05 Mark would have reached into his top pocket and pulled out a card that had 3.05 on it. You try it, write on 10 pieces of paper "I knew you would say - grapefruit. another piece of paper "I knew you would say banana etc.. then put these around your front room, behind cushions, under ornaments then ask a family member to name a fruit, remember where that one is and direct them to it..
The pendulum and the key are metal and that's done with concealed magnets.. Sorry to disappoint but it's not possible to read body language the way he says... Derren Brown does the same but dresses it up as suggestion, psychological illusion but it's just magic at the end of the day, nothing more..
Hope that answers your question..