I cannot help but compare this book to my favorite Dan Abnett story, Embedded. There is a similar story here, Abnett uses human journalists as point of view characters to investigate the Astartes. However, the execution falls somewhat flat. The heavy weight of 40k lore prevents the journalists from getting too close to the action, and it also prevents Abnett from innovating as far as he clearly wanted to with the almost really cool antagonists he created for this book.