Wolf at the Door: The Horus Heresy Series (Unabridged‪)‬

The Space Wolves of the VIth Legion are among the most fierce and dedicated of the Legiones Astartes, bringing the Emperor's wrath against the many enemies of mankind.

As part of the 954th Expedition, Wolf Lord Bulveye's warriors of the 13th Company come across a world previously shrouded by warp storms and cut off from the rest of the Imperium - when it becomes apparent that the human population is being raided by mysterious xenos known as 'the Harrowers', the Space Wolves are duty-bound to intervene.