The Batman Who Laughs is enacting a sinister plan across the Multiverse-something both terrifying and oddly familiar. When Bruce Wayne realizes the only way to stop this madman is to kill him, he must consider violating the very rule Batman can�t ever break...the rule that created the Batman Who Laughs! As Bruce begins to realize that all the mistakes he�s made are somehow connected, the Batman Who Laughs unleashes a brand-new evil. Enter one of the most punishing Batmen of the Dark Multiverse: the Grim Knight! Collects THE BATMAN WHO LAUGHS #1-7 and THE BATMAN WHO LAUGHS: THE GRIM KNIGHT #1.