Justice League Dark Vol. 2 #25
It's their greatest crisis-and the Justice League Dark is a team divided! Wonder Woman, Zatanna, and Swamp Thing are outmatched and defeated at the hands (and endless teeth!) of the Upside-Down Man. But Detective Chimp, Doctor Fate, and Man-Bat will do anything to save their teammates, even turn to the man they swore never to trust: John Constantine!