Justice League Dark is a movie that has been in development for a long time, but made a major change and took a big step forward last summer. While Guillermo del Toro had spent many years working on the project, he wound up stepping away, leading Doug Liman to take the reins in August 2016. While it's possible that things have changed, it was previously reported that the roster of "heroes" will include John Constantine, Swamp Thing, Deadman, Zatanna and Etrigan the Demon. What remains unclear is the mysterious plot that the group will be facing -- but I have to say that when I heard Doug Liman's approach, I couldn't help but internally think about a haunted house set-up.