Arkham Asylum

Grant Morrison and Dave McKean's 1990 graphic novel for DC isn't a typical superhero story but a harrowing, psychological horror piece set within Gotham's infamous psychiatric prison. Through surreal, painted imagery and a fragmented narrative, it explores the madness of Batman's greatest foes and the fragile line between sanity and insanity. This single, acclaimed prestige-format issue remains a landmark in comics for its experimental art and its deep, unsettling character study.