A major tendril from Hive Fleet Leviathan pushes through the cold void towards the Shieldworlds of the Cryptus System. Loathe to abandon a key territory – especially one so close to the Blood Angels’ home system of Baal - the forces of the Astra Militarum and Adepta Sororitas prepare to defend the region with their lives. Presented in a deluxe slipcase, this two-book set is brimming with all-new Warhammer 40,000 content. Book one is a 152 page narrative book containing: A wealth of background describing how the Cryptus System became embroiled in conflict A blow by blow account of the key events of the invasion and the major battles Descriptions of famous regiments that took part in the conflict including their background, colour schemes and heraldries Brand new artwork showing the planets, space stations and environments found within the Cryptus System Book two is a 64 page rulebook that enables you to play games set during the invasion of the Cryptus System: 6 new Echoes of War missions to test your mettle Cities of Death rules for fighting games of Warhammer 40,000 amongst the war torn streets of destroyed cities 6 Cities of Death missions and 36 tactical objectives Rules for Death From The Skies, allowing you to include fighter aces in your Warhammer 40,000 battles New Tyranids detachment rules and Warlord Traits to represent the composition of the forces of Hive Fleet Leviathan New Datasheets for the Mucalid Spore Cluster, Zoanthrope Brood, Maleceptor, Toxicrene, Tyrannocyte, Sporocyst and Mucolid Spore 6 new Tyranids formations