Hunter's Moon is the twentieth audio drama for the Horus Heresy Series that was not originally released as part of an anthology or other release. Hunter's Moon was published online in January 2014 by the Black Library as an audio CD that included the audio drama Thief of Revelations. The title was also published as part of the Legacies of Betrayal main series anthology novel and again as a part of The Razing of Prospero omnibus.