The Harry Potter franchise is not confined to just the page or the screen, but has been and continues to be reimagined and reconfigured through a number of extratextual products, texts, and experiences which surround and rework the Harry Potter texts. This book centres around the 2010s, or the ’post-Potter era’, a period of unprecedented growth and reinvention for the franchise. Many of the franchising developments produced during this time operated according to distinct strategies: to consolidate the legacy of the Harry Potter series, or to extend the fictional universe into new settings, media and cultural forms. This book explores six such developments - J.K. Rowling’s authorship, the website Pottermore, the ’Wizarding World of Harry Potter’ theme parks, the Warner Bros. Studio Tour in Watford, the Fantastic Beasts films, and the stageplay Harry Potter and theCursed Child - to shine a spotlight on a franchise in flux.