DC Multiverse - Knight Terrors - Batman / Deadman

The Batman Knight Terrors storyline involves Batman and Deadman trapped in a shared nightmare orchestrated by a new villain called Insomnia. Insomnia’s goal is to exact revenge on the heroes of the DC Universe, and he does so by plunging them into their worst nightmares. Batman, initially possessed by Deadman, must confront his deepest fears in the nightmare world while Deadman tries to control his body.