Detective Comics #805 2005

Detective Comics #805, published by DC in 2005, features "City of Crime, Part 5: The Heating Up, Mud." Batman races against time to locate Mr. Freeze's lair to rescue a young girl and a priest, battling a horde of monstrous adversaries. This issue is notable for the deaths of characters Marcus Rivera and Cassie Welles, and also includes the backup story "Exit Menu". It's a key chapter in the "City of Crime" storyline.