He is a Member of the Inner Magic Circle with Gold Star status and is a leading expert on the life of Harry Houdini and other historical magicians and entertainers including Chung Ling Soo and Jasper Maskelyne. He is the author of three books, and has been an sceptic invited to give commentary on television and radio shows. In 2012, Paul collaborated with cult comic book artist Vince Ray to produce a custom deck of playing cards: the Z-Ray Deck, printed by the United States Playing Card Company, as part of their 'Bicycle' brand.