Magic Numbers Season 1 Episode 6

It was originally planned that guest Alexandra Burke would assist Stephen Mulhern with an illusion called The Crystal Sawing, in which she would be sawed in half inside a transparent box. This would have been the UK TV premiere of this illusion. However, she was unable to rehearse the illusion due to illness. As a result, it had to be postponed until the following week, when Stephen performed it on that week's special guest, opera singer Katherine Jenkins.