Arkham Asylum: A Serious House on Serious Earth
 Commissioner Gordon informs Batman that the patients of Arkham Asylum have taken over the facility, threatening to murder the staff unless Batman agrees to meet with them. Among the hostages is Dr. Charles Cavendish, Arkham's administrator, and Dr. Ruth Adams, a therapist. The patients are led by the Joker, who kills a guard to spur Batman to obey his wishes. Meanwhile, 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 and a tarot deck, hoping that he would realize that he doesn't need any of them. Instead, the treatment renders him incapable of even making simple 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. However, unbeknownst to Batman, the Joker shortens the time from one hour after being pressured by the other inmates. Batman subsequently encounters Clayface, Mad Hatter, and Maxie Zeus, among other villains. During a struggle with Killer Croc, Batman is thrown out of a window, grabbing onto the statue of an angel. Clutching the statue's bronze spear, Batman climbs back inside and impales Croc before throwing him out the window, sustaining a severe wound from the spear in the process. Batman finally reaches a secret room high in the towers of the asylum. Inside, he discovers Cavendish dressed in a bridal gown and threatening Adams with a razor. It is revealed that he orchestrated the riots. When questioned by Batman, Cavendish has him read a passage from the diary of the asylum's founder, Amadeus Arkham. In flashbacks, we see that Arkham's mentally ill mother, Elizabeth, suffered delusions of being tormented by a supernatural bat. After seeing the creature himself, Arkham cut his mother's throat to end her suffering. He blocked out the memory, only to have it return after an inmate, Martin "Mad Dog" Hawkins, raped and murdered Arkham's wife and daughter. Traumatized, Arkham donned his mother's wedding dress and razor, vowing to bind the evil spirit of "The Bat" with sorcery. He treats Hawkins for months before finally killing by means of electrocution during a shock therapy session. Arkham continues his mission even after he is incarcerated in his own asylum; using his fingernails, he scratches the words of a binding spell all over his cell until his death. After discovering the diary, razor, and dress, Cavendish came to believe that he was destined to continue Arkham's work. On April Fools Day--the date Arkham's family was murdered--Cavendish released the patients and lured Batman to the asylum, believing him to be the bat Arkham spoke of. Cavendish accuses him of feeding the evil of the asylum by bringing it more insane souls. Batman and Cavendish proceed to struggle, which ends after Adams slashes Cavendish's throat with the razor. Seizing an axe, Batman hacks down the front door of the asylum, proclaiming that the inmates are now free. The Joker offers to put him out of his misery. Batman retrieves Two-Face's coin from Adams and returns it to him, stating that it should be up to Two-Face to decide Batman's fate. Two-Face declares that they will kill Batman if the coin lands scratched side up, but let him go if the unscarred side appears. Two-Face flips the coin and declares Batman free. The Joker bids Batman good-bye, taunting him by saying that should life ever become too much for him in "the asylum" (the outside world) then he always has a place in Arkham. As Batman disappears into the night, Two-Face stands looking at the coin and it is revealed that it landed scratched side up – he chose to let Batman go. He then turns to the stack of tarot cards and recites a passage from Alice's Adventures in Wonderland: "Who cares for you? You're nothing but a pack of cards."