Dark Nights Metal Tie-in (Bats Out of Hell: Part 4 of 4) - Written by Joshua Williamson. Art by Tyler Kirkham. Cover by Ethan Van Sciver. A METAL tie-in! 'BATS OUT OF HELL' finale! it's the Justice League versus the Dark Knights! FIGHT! The Dark Knights have taken a fallen Justice League to the frightening castle of [REDACTED] inside the possessed Gotham City, where they will be prepared as a sacrifice! The Justice League's only hope is Cyborg, whose return from the Dark Multiverse has changed him forever!