"Deathshade: Demon Child" is the title of the novelization of Deathshade #1. It was written by Michael J. Longo in December 2015.
The story follows Deathshade, a violent vigilante, on his latest mission. The story is told in first person, from Deathshade himself. While the reader does not learn Deathshade's identity, there are many aspects of the character revealed, and more details are given than what is found in the comic Deathshade #1.
Deathshade has just hung up the phone with Javier Reisberg, one of his most trusted informants. He's been given information on Maurice Lester and his planned actions. The story is further described on the Deathshade (comic book) page.