The Courthouse News Service reports that the illusionist performer named Teller of Penn and Teller has sued a Dutch performer for performing his copyrighted illusion known as "Shadows." the Dutch performer has since offered to sell the secret of the illusion. The lawsuit includes a request for injunctive relief to prevent this from happening. The illusion is apparently copyrighted by Teller as a pantomime performance.
A video of the "Shadows" illusion follows: