Batman Legends Of The Dark Knight #54 1993

In "Sanctum," Batman's pursuit of a killer in a Gotham graveyard unleashes a supernatural force, transporting him to a quasi-purgatory. There, he confronts Osric Drood, a cult leader seeking resurrection through Batman's blood. This self-contained Gothic horror tale is notable for its rare artwork by Mike Mignola, who also co-wrote the issue. It's a collector's item as it showcases Mignola's early exploration of occult and horror themes, foreshadowing his later acclaimed work on Hellboy.