Detective Comics #623 1990

Detective Comics #623, published in November 1990, features part two of the three-part "Demon Within" storyline. Batman pursues a serial killer whose methods are inspired by an unauthorized Batman comic book, leading to a chilling convergence of fiction and reality in Gotham City. This issue is notable for its meta-narrative, showcasing a comic-within-a-comic element. It also features a distinctive cover by Golden Age artist Dick Sprang, making it a unique piece for collectors interested in the character's publication history and artistic contributions.