Yet another outstanding entry in the multi-dimensional, multi-era Horus Heresy series as this one deals with the origins of the betrayal of Lorgar and the Word Bearers legion. Much as Horus was lured by Chaos, Lorgar is basically dressed down by the Emperor in front of a fellow primarch, Guilliman of the Ultramarines, for too much worship and not enough conquest in The Great Crusade. This leads him to reject the Emperor and set out on a pilgrimage of finding the truth through utter destruction of compliant worlds, which ultimately lead him to the edge of the galaxy and a date with Chaos as well. Fast forward forty years and the Word Bearers find themselves part of the seven traitorous legions with Horus on Isstvan V where they basically declare galactic war against the Imperium. Memorable scenes involving subordinates of Lorgar where Chaos has basically taken control ensue during the battle, spoilers notwithstanding, soldiers undergoing "shape-changing". Once again, Erebus seems to be behind the scenes instrumenting yet another conversion of Imperium personnel to Chaos. The Heresy series continues to crank out memorable stories with fascinating characters.