The Quinn is dead! Long live the Quinn! Harley needs to solve her own murder in the finale to writer Stephanie Phillips fan-favorite time on Harley Quinn ! Who killed Harley Quinn? Somebody needs to solve her murder, and the only worthy candidate is. Harley herself! Though, since she's dead.there are certain hurdles to overcome. The wild final arc of writer Stephanie Phillips' Harley Quinn stint has murder, Multiversal mischief, guest appearances, and stunning art from Matteo Lolli! Plus, don't miss the terrifying debut of. the Harley Who Laughs! This volume collects Harley Quinn #21-27.