Legends of the Dark Knight — DC Comics
Issue: #21
Some shocking truths are revealed about the mysterious Grace, and what she wants from the inmates of Arkham! "Haunted Arkham" part 3 of 3.
Creators: Jim Charalampidis, Ben Abernathy, Kristy Quinn, Saida Temofonte, Saida Temofonte, Jason Masters, Hank Kanalz, Joe Harris
Characters: Batman, Joker, Killer Croc, Maxie Zeus, Scarecrow, James Gordon, Mr. Zsasz, Clayface (Karlo), Mr. Freeze, Riddler