Warhammer 40k - Yarrick: Concordat by David Annandale

THE STORY
Returning to his master after secondment to the Armageddon 252nd regiment on Mistral, the young Commissar Sebastian Yarrick is drawn into a Chaos plot on Aighe Mortis. Contagion is spreading throughout the populace and the Inquisition require someone with experience of fighting the archenemy. After the horrors he has faced, can Yarrick find the source of the danger and destroy it?

READ IT BECAUSE
It's always great to see the origins of a character that will grow to become a legendary figure. Here, we see Commissar Yarrick years before he would grow to become the Hero of Armageddon, up against the foul machinations of Chaos. Action, intrigue, inquisitors, and heroics - this story has it all.