Batman Issue 546

"Hell to Pay"
Batman caused Etrigan to realize that Joker was not a sorcerer; he was using the demon. Batman saved Joker from Etrigan's wrath and delivered him to the police. He was sent back to Arkham Asylum. However, the demon vanished before Batman could apprehend him and bring him to justice.

Individuals

 * Batman
 * Etrigan the Demon
 * Mackenzie Bock
 * Harvey Bullock
 * James Gordon
 * The Joker

Locations

 * Gotham City