James Tynion IV started in the comics business assisting Scott Snyder in writing backup stories for Snyder's groundbreaking Batman series. Tynion soon began writing Talon , a series that spun out of the hugely popular "Batman: The Court of Owls" story line. He has also written Batman , Detective Comics , Constantine: The Hellblazer, and Justice League Dark , and currently is at the helm of horror hits Nice House on the Lake , Something is Killing the Children , and The Department of Truth .