While The Joker threatens the very existence of Gotham City, these heroes --and villains--must find a way to survive.Collecting: Detective Comics 16-17, Catwoman 13-14, Batgirl 14-16, Red Hood and the Outlaws 15-16, Teen Titans 15, Nightwing 15-16, Batman and Robin 15-17, Batman 13, 17; & material from Detective Comics 15, Suicide Squad 14-15, Batgirl 13, Red Hood and the Outlaws 13-14, Teen Titans 14, 16; Nightwing 14, & Batman 14