THE MACHARIAN SECTOR BURNS; THE HERESIES MACHARIA ARE IN MOTION!

Inquisitor Lord Hieronymo Drake is dead. Much like the sector itself, the Macharian Inquisition is in disarray — but one Inquisitor has risen to the challenge of uniting them in Conclave. Beyond the countless heretics, daemonic influences and foul xenos lurks a threat that, left unchecked, could consume the whole sector. Can the conclave’s Inquisitors and acolytes put their shadow wars aside and work together to purge this threat before it threatens the entire Imperium?

The Inquisition Guides bring the Holy Orders of the Emperor’s Inquisition to life at your gaming table. This second half of a thrilling two-book set for Warhammer 40,000 Roleplay: Imperium Maledictum, the Inquisition GM’s Guide gives you all the tools and content you need to craft unforgettable and perilous investigations for your players and their acolytes.

A deep dive into Inquisitorial Philosophies: how they can influence an Inquisitor’s decisions, shape their goals, and hook characters into further missions.

A collection of GM advice for running Inquisition Investigations: tips on roleplaying characters, how to seed in clues, Chaos corruption and daemonic influence.

Six sample Inquisitor Patrons with rich histories and motivations — any of them could be the perfect ally or secret enemy for your party.

The Heresies Macharia Campaign — a decades-spanning adventure where players will travel all across the sector and face every kind of threat, all while rooting out deadly mysteries and corruption within the Inquisition itself.

A roster of inquisitorial Contacts for players to interact with and a collection of deadly Sector Threats to seed into your campaigns — as driving antagonists or obstacles.

The Inquisition GM's Guide requires the Imperium Maledictum Core Rulebook to play. It brings the focus in on Inquisition-themed adventures, adding new elements to your ongoing campaign, or setting you up for a brand new adventure. The Inquisition Player’s Guide completes this two-book set, containing all the tools and new rules you need to build and outfit acolytes and their Inquisitor Patrons!

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Released: 26 September 2025