Harley Quinn, Volume 5: The Joker's Last Laugh

"At long last, it's Harley Quinn and The Joker, face-to-face! 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. The life of Harley's new love, Mason Macabre, is in the Joker's hands...but can he or Harley survive another round of The Joker's twisted mind games? From the best-selling creative team of Jimmy Palmiotti and Amanda Conner (STARFIRE) comes HARLEY QUINN VOL. 5! Collects HARLEY QUINN #22-27"--