Collects all of Dan Abnett's Inquisitor short stories, serving as a prologue to The Magos, a new full-length Eisenhorn novel. Inquisitor Gregor Eisenhorn has spent his life stalking the darkest and most dangerous limits of the Imperium in pursuit of heresy and Chaos. This new novel pits him against his oldest and most constant foe, and forces him to confront the true darkness of his own self.

In the 41st Millenium, the enemies of mankind are legion, omnipresent and utterly deadly. While the warriors of the Imperium fight with firepower and faith, the Holy Inquisition hunts the shadows for the most terrible of foes - rogue psykers, xenos, and daemons. Inquisitor Eisenhorn must track down and defeat the forces who would destroy him or face the wrath of the Ordo Malleus.

The Battle Titans of the Adeptus Titanicus are towering war engines, striding to war as holy effigies of the Omnissiah. Greatest of all are the mighty Warlord Titans, their weapons bringing righteous death to the alien and heretic alike. Still reeling from a near-disastrous battle against the tyranids, the Pallidus Mor demi-legio is assigned to a new warzone, a nearby forge world which has fallen under the sway of Chaos. Here their battered war machines...