Written by Amanda Conner and Jimmy Palmiotti. Art by Chad Hardin. Cover by Amanda Conner. Harley's got an endangered friend to save, but there's just one problem: she's got to get through Arkham Asylum first! Unsurprisingly, Harley's not eager to set foot in the site of some of her darkest hours…and she definitely isn't ready to face a certain someone who's laughing at the end of a dark hallway… 32 pages, full color. Rated T+ Cover price $3.99.