Raptor

The Horus Heresy Series

After the decimation of his Legion on the killing fields of Isstvan V, the primarch Corax sanctioned an accelerated implantation process to create new Raven Guard - a process subverted in secret by his enemies. But in spite of their horrendous mutations, the warriors of the Raptors still stand ready to do their primarch's bidding.

When a watch-pack of Space Wolves legionaries arrives unannounced, it falls to Lieutenant Navar Hef to greet their warlike kinsmen and decide whether or not they might be hiding flaws of their own....

©2015 Games Workshop Limited (P)2011 Games Workshop Limited

Great Short Audiobook

I liked the narrative and there were plenty of touches like footsteps and other small sounds that added a lot. There were a lot of narrators as well so there was an added level of effect.