Audio dramas (not audio books, there’s a difference) are a relatively late addition to the Black Library stable, but have nevertheless become an established format, especially within the Horus Heresy series where there are now more than 20 of varying lengths. Guy Haley’s second, Hunter’s Moon, is a 35-minute piece available either as a standalone MP3 download or in CD format accompanied by Thief of Revelations, by Graham McNeill. It concerns the Space Wolves of the Vlka Fenryka, specifically one particular squad who were sent to ‘watch over’ the Alpha Legion and their primarch Alpharius. Three guesses as to how well that went.