Dai Vernon (pronounced alternatively as "DIE" or as "DAY" as in David) (June 11, 1894 – August 21, 1992), a.k.a.
The Professor, was a Canadian magician.
His expert sleight of hand technique and extensive knowledge, particularly with card tricks and close-up magic, garnered him respect among fellow magicians.
His influence was considerable in the magic world of the 20th Century, and he was a mentor to numerous famous magicians.
He lived out his last years at the Magic Castle, a nightclub in Hollywood, California.