The brilliant mind-reader, who bills himself as a real-life Sherlock Holmes, invited Cowell to sit on a park bench on stage with him for a very complicated and slightly confusing demonstration of his skill set.
After calling a random member of the audience on stage to choose one of four colorful knives Cloud presented her, the impressive sleuth deduced that the volunteer had selected the white knife. Cloud handed the knife to Mel and asked her to stab Simon with it.
Needless to say, Mel had no problem going through with the act, but it turned out the knife had a rubber blade. However, Cloud had a rather surprising revelation: the white knife was the only fake knife of the bunch. If the volunteer had chosen any other blade, Mel would have (possibly) killed Cowell on live TV.
While the performance was undeniably impressive, the judges all pointed out just how unnecessarily complicated the premise of the act was. However, Cowell was still emotionally recovering from his (sort of) near-death experience when it came time to give feedback.
"I'm just sort of collecting myself a little bit at the moment," the shaken judge said. "I nearly got murdered on live TV."