Britain's Got Talent's judges are left horrified on tonight's programme after Simon Cowell almost has his neck slashed by a flying knife.
This evening, daredevils Claire-Marie and Jason take to the stage and invite Simon and David Walliams to be part of their act.
Amanda Holden tries her best to dissuade Simon from taking part, but he ignores her and gets on stage.
David is then invited up, prompting Alesha to tell them: "You guys have gone absolutely crazy!"
Simon and David are told to stand back to back against the wooden board as Ant and Dec wish them "good luck".
David asks: "Is it better to look or not look?"
The judges hold hands as contestant Jason is poised with a knife in his hand.
As he tells them "don't move", David closes his eyes.
Jason begins flinging knives close to Simon, one particularly terrifying one landing so close to his face it almost slices his skin.
Simon looks terrified by the closeness of the blade as Amanda gasps: "Oh my god!"
"That one was close," Alesha adds.
It's David's turn next and he yells out after a knife nearly hits his leg.
He squeezes his eyes shut for the next three knives to be thrown...
*Britain's Got Talent airs tonight at 8pm on ITV
