The Emperor is enraged. Primarch Magnus the Red of the Thousand Sons Legion has made a terrible mistake that endangers the very safety of Terra. With no other choice, the Emperor charges Leman Russ, Primarch of the Space Wolves, with the apprehension of his brother from the Thousand Sons' home world of Prospero. This planet of sorcerers will not be easy to overcome, but Russ and his Space Wolves are not easily deterred. With wrath in his heart, Russ is determined to bring Magnus to justice and bring about the fall of Prospero.

Read it because
Vlka Fenryka! The Space Wolves charge into the Horus Heresy as their part in the events leading to the fall of the Thousand Sons is revealed. Spies, intrigue, plenty of action and a glimpse at Terra in the early days of the Great Crusade make this an unmissable read.

The eBook edition includes integrated illustrations of characters and events from the story, and an afterword that places the story in context within the series.