The third and final part of the Isstvan trilogy, this book details the aftermath of the Dropsite Massacre on Istvaan V, and two other major battles fought between the Loyalist and Traitor Legions as the Horus Heresy swept out from the Isstvan system and into the wider Imperium of Mankind: the Battle of Phall and the Invasion of Paramar. Also featured are the background and game rules for the units, characters and vehicles of the four Legions covered in this book: the Alpha Legion, Imperial Fists, Raven Guard and Iron Warriors, and a Mechanicum army list, as well as new campaigns and missions. The book itself is a full colour 285 page hardback, leather bound with metal corner clasps, foil-edged pages and embossed and silvered text.