When this trick was first performed, ushers poured buckets of blood down the gutter outside the theatre to entice people into the macabre spectacle. Today Dallas is joined by Jim Steinmeyer to talk about the invention and development of the most iconic magic trick of all - Sawing Someone In Half.

It turns out that Dallas is something of a magician himself and has been fascinated by the history of magic for a long time. And Jim, author of Hiding the Elephant and many other books on magic, is something of a hero.

Edited by Joseph Knight, Produced by Freddy Chick, Senior Producer is Charlotte Long

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