Derren Brown may have flummoxed the television viewers with his Lottery trick (UK), but one YouTube user claims to have the secret and has successfully recreated it.
The video shows how it is possible to use split screen technology to give the impression that the Lottery balls are in the live shot. In fact, they are a static image.
The most popular theory about Brown's Channel 4 show is that the left hand side of the screen, which showed the numbered balls lined up in a row, was a frozen image. In reality, an assistant was putting the balls in place during the 30-second delay between them being drawn on the BBC and Brown revealing his numbers. The entire screen only became live at the moment Brown walked towards the balls, according to this theory.
Viewers have been poring of video of Brown's trick, looking for the 'join'. The unusually shaky camera work could have served to disguise the effect.
The use of split screen digital trickery could leave viewers feeling somewhat cheated.
Brown has promised to reveal the secret in a special programme on Channel 4 tonight. However, not all of his tricks are what they seem.
In 2003, Brown staged a live televised game of Russian roulette in which he fired a gun at his temple. He insisted: "It's a real gun, it's a real bullet." Embarrassingly for him, police later announced that the stunt was a fake and the gun contained only blanks.