How did simple film adaptions balloon into vast multi-platform franchise adaptations? And how are studios and filmmakers using transmedia storytelling to build both vast fictional worlds and brands? Why do young adult novels make great franchise source material? And are mega franchises – like Marvel, Star Wars and Harry Potter – changing film criticism? In my A-Z of Adaptations, B is for Blockbusters. “If you think adaptation can be understood by using novels and film alone, you’re wrong,”  Linda Hutcheon, A Theory Of Adaptation  In the last two decades, evolving digital media has changed the way we create, consume and interact with fiction. James Bond, Jason Bourne and Harry Potter are no longer simply book characters but brands. Audiences are global. Fans are thirsty…