The most plausible match is as a conceptual or archival project—possibly an annotated bibliography, database, or critical index about the art of illusionism, magic history, or a specific illusionist (e.g., Houdini, Copperfield, or a fictional character).
It’s unclear whether refers to a specific book (e.g., a scholarly index or catalog), a film/TV episode, a video game, an art installation, or a website feature. To provide a useful review, I need to assume a likely candidate. Index Of The Illusionist