Illusionology is the art of illusion and tricks, revealed in Illusionology: The Secret Science of Magic purported to be by Albert Schafer, a member of the Illusionists' Guild. Schafer propounds a theory that there are eleven basic type of trick and he sequentially guides the reader through them with illustrative examples.It talks about past illusionologists and magicians and the secrets of their tricks. explaining many aspects such as levitation, disappearing,mind control,exposing spirit mediums and great feats, such as the bed of nails and sword swallowing.it also has trick cards and other basic tricks that are simple to learn. there is also the diary of albert schafer