Journey to the other place--with John Constantine! When Wonder Woman, Zatanna, and Swamp Thing are taken down by the hands (and endless teeth!) of the Upside-Down Man, the remaining members of the Justice League Dark--Detective Chimp, Doctor Fate, and Man-Batm--will do anything to save them, even make a deal with a man they swore never to trust: John Constantine! But the magician's aid comes with a price, and as the group storms the Other Place, the domain of the Upside-Down Man, Constantine's power might be more than they bargained for. But in the face of such an enemy, everything has a cost. And as their losses continue to mount, what--and whom--is the team willing to sacrifice to defeat their greatest foe? From rising stars Ram V (Catwoman) and James Tynion IV (Batman) with art from Amancay Nahuelpan (Gotham City Monsters), and Álvaro Martínez Bueno (Detective Comics), this fateful volume collects Justice League Dark #20-28.