The inmates of Arkham Asylum have taken over Gotham's detention center for the criminally insane on April Fool's Day, demanding Batman in exchange for their hostages. Accepting their demented challenge, Batman is forced to endure the personal hells of the Joker, Scarecrow, Poison Ivy, Two-Face and many other sworn enemies in order to save the innocents and retake the prison. During his run through this absurd gauntlet, the Dark Knight's must face down both his most dangerous foes and his inner demons.This is the critically acclaimed Batman story that helped launch the U.S. careers of Grant Morrison and Dave McKean.

Grant Morrison has been working with DC Comics for more than twenty years, beginning with his legendary runs on the revolutionary titles ANIMAL MAN and DOOM PATROL. Since then he has written numerous best-sellers — including JLA, BATMAN and New X-Men — as well as the critically acclaimed creator-owned series THE INVISIBLES, SEAGUY, THE FILTH, WE3 and JOE THE BARBARIAN. Morrison has also expanded the borders of the DC Universe in the award-winning pages of SEVEN SOLDIERS, ALL-STAR SUPERMAN, FINAL CRISIS and BATMAN, INC., and he is reinvented the Man of Steel in the all-new ACTION COMICS.

In his secret identity, Morrison is a “counterculture” spokesperson, a musician, an award-winning playwright and a chaos magician. He is also the author of the New York Times best-seller Supergods, a groundbreaking psycho-historic mapping of the superhero as a cultural organism. He divides his time between his homes in Los Angeles and Scotland.