The Horus Heresy 2: False Gods 

The Horus Heresy Book 2

The Great Crusade that has taken humanity into the stars continues. The Emperor of Mankind has handed the reins of command to his favoured son, the Warmaster Horus. Yet all is not well in the armies of the Imperium...

READ IT BECAUSE
The seeds of Horus' betrayal are planted here, and the true nature of the universe revealed. Also, one of the Warhammer 40,000 universe's most reviled villains, Dark Apostle Erebus of the Word Bearers, reveals his true colours, and becomes the Space Marine you love to hate...

THE STORY
The Great Crusade that has taken humanity into the stars continues. The Emperor of mankind has handed the reins of command to his favoured son, the Warmaster Horus. Yet all is not well in the armies of the Imperium. Horus is still battling against the jealousy and resentment of his brother primarchs and, when he is injured in combat on the planet Davin, he must also battle his inner daemons. With all the temptations that Chaos has to offer, can the weakened Horus resist?

Written by Graham McNeill