The secret behind a famous magician's signature performance has been revealed after a man from Kent launched a lawsuit against him. <br /><br />David Copperfield had to explain the trick after Gavin Cox, from Broadstairs, claimed he has suffered lasting injuries after agreeing to take part in one of his Las Vegas shows.<br /><br />Martin Collins, a magician from Kent, joined us in the studio to talk a bit more about it, and whilst he was in, he showed us some tricks.
