Grant Morrison has put his Arkham Asylum sequel on hold. DC Comics published the Batman graphic novel Arkham Asylum: A Serious House on Serious Earth in 1989. Morrison wrote the story and Dave McKean provided the artwork. When it debuted, it became the bestselling superhero graphic novel of all time and has sold 600,000 copies worldwide. In 2017, Morrison announced that he’d begun scripting a sequel to be drawn by Chris Burnham, his collaborator on Batman Incorporated. The sequel would take place in the future Morrison established in Batman #666, where Bruce Wayne’s son Damian had taken on the Batman mantle. But then television came calling, including Morrison’s adaptation of Brave New World. Because of that, he had to abandon the Arkham Asylum sequel, but he may return to it.