ARKHAM MANOR: ENDGAME #1

Arkham Manor: Endgame #1 (DC Comics, 2015). During the Joker-driven chaos of "Endgame," security guard Stone leads inmates and staff through a terrifying breakout at Wayne Manor's Arkham facility — only to discover the "Joker" tormenting them is actually Dr. Jeremiah Arkham, driven mad, before Jim Gordon and Harvey Bullock's SWAT team arrives.