John Constantine enters the fray to help Batman and Zatanna with their mystical woes, but will he only tear the two further apart? In the final "Eternity" chapter, Christopher Freeman comes face to face with a brutal killer to help solve a decades-old murder...will he survive? Ace the Bat-Hound leads his posse of DC Super-Pets-Merton, Lil' Nutz the thieving squirrel, and Ursa the Russian bear-as they finally break free from the evil lab! But will they get very far without knowing where Batman is held captive?