Inside this 240-page hardback book, you'll find:

- The Years of Darkness and Blood

- Campaigns of The Age of Darkness: The Siege of Cthonia

- Age of Darkness: Core Missions Five new Core Missions, balanced for both campaign games and Matched Play events.

- Siege of Cthonia: Apex Missions Two new Apex Missions, with extensive special rules intended for campaigns and narrative games.

- Age of Darkness: Zone Mortalis

- Zone Mortalis: Core Missions Three new Core Missions and two new Apex Missions for Zone Mortalis games, plus specific rules for Cthonian Underworld Zone Mortalis terrain such as Subterranean Tunnels and Promethium Condenser Tanks.

- Legiones Astartes: Rules Addenda:
Legiones Astartes: Imperial Fists
Legiones Astartes: Sons of Horus
Legiones Astartes: Legiones Decurion
Agents of the Cults Abominatio
Legiones Astartes: Inductii

- Showcase

In order to use the contents of this book, you will require theWarhammer: The Horus Heresy The Age of Darkness Rulebookand one of the Army Books for Warhammer: The Horus Heresy.