3 books in series

Fantastic Beasts: The Original Screenplay

Fantastic Beasts: The Original Screenplay is a 3-book series with 3 released primary works first released in 2001 with contributions by J. K. Rowling and Steve Kloves.

Fantastic Beasts and Where to Find Them: The Original Screenplay
Fantastic Beasts: The Crimes of Grindelwald: The Original Screenplay
Fantastic Beasts: The Secrets of Dumbledore: The Complete Screenplay