Arkham Asylum: Living Hell #4 was published by DC Comics on October 1, 2003, as part of a series that began in 2003. Dan Slott writes, and art comes from Eric Powell, Lee Loughridge and Ryan Sook. This 36-page issue features Joker, Poison Ivy, Two-Face, Riddler and Killer Croc, among 18 characters cataloged on VerseDB.