Arkham Asylum: A Serious House on Serious Earth (often shortened to Batman: Arkham Asylum) is a Batman graphic novel written by Grant Morrison and illustrated by Dave McKean. The story follows the vigilante Batman, who is called upon to quell a maddening riot taking place in the infamous Arkham Asylum, a psychiatric hospital housing the most dangerous supervillains in Gotham City. Inside, Batman confronts many of his enduring rogues gallery, such as the Joker, Two-Face, and Killer Croc. As Batman ventures deeper, he discovers the origin of how the asylum was established, the history of its founder Amadeus Arkham, and the supernatural and psychological mystery that has been haunting the mansion. Upon its release, the graphic novel garnered commercial and wide critical acclaim and is considered by many to be one of the greatest Batman stories of all time, and one of the best works in Grant Morrison's career. Morrison's narrative and Dave McKean's artistic style were described as more mature, unique, psychologically-driven and horror-oriented take on the Batman mythos and the distinctiveness from other conventional superhero works. The graphic novel would later become the definitive story of Arkham Asylum, a critical part of the Batman mythos. The critically acclaimed, similarly titled video game Batman: Arkham Asylum, the first game in the Batman: Arkham series, was partially influenced by the graphic novel. Plot On April 1st, Commissioner Gordon informs Batman that the patients of Arkham Asylum, led by the Joker, have taken over the facility, threatening to murder the staff unless Batman agrees to meet with them. Among the hostages are Dr. Charles Cavendish, Arkham's administrator, and Dr. Ruth Adams, a therapist. At the asylum, Batman discovers that Two-Face's mental condition has deteriorated as a result of Adams' therapy; she replaced Two-Face's trademark coin with a six-sided die, then a tarot deck, increasing the number of choices he has in the hope that he will eventually not leave any of his choices up to chance. Instead, the treatment renders him incapable of making even the simplest decisions, such as going to the bathroom. The Joker forces Batman into a game of hide and seek, giving him one hour to escape Arkham before his adversaries are sent to hunt him down. Through the asylum, Batman encounters Clayface, Doctor Destiny, Scarecrow, Mad Hatter, Maxie Zeus, and Killer Croc. He reaches a secret room in the towers, where he finds Cavendish holding Adams