The idea behind Black Library’s series of Space Marine Battles novels and audios is that they showcase some of the most famous actions featuring the Imperium’s finest, but while Space Marines are fundamentally cool, there’s often a risk of these stories being a little…well, a little silly. Step forward Mortarion’s Heart, the story of a single Grey Knight battling a daemon primarch and (SPOILERS) emerging victorious. It’s all well and good having things like this as colour text for a codex, but as a full story there’s a definite whiff of the preposterous. So how does LJ Goulding do as he tackles this particular tale?
