
I have really been enjoying the short story audio books from Black library. Legion of One is no exception, in fact I think it is one of the best.
Here is the description from the Black Library site:
"Nathaniel Garro, loyalist Death Guard, and hero of the Eisenstein, has found a new calling in his service to the Emperor. Surrounded by a cloak of secrecy, Garro travels the galaxy in pursuit of his new goal. His quest will lead him to heart of the most destructive warzones, and reveal a secret that will change the course of the Horus Heresy itself..."
I found the revelation at the end of the story to be very Epic as a fan of the Horus Heresy book series! So if you are a fan of the Heresy book series by all means pick up Garro: Legion of One.