Butcher's Nails is the fifth audio drama for the Horus Heresy Series that was not originally released as part of an anthology or other release. Butcher's Nails was released in both compact disc and MP3 formats and was written by Aaron Dembski-Bowden, narrated by Sean Barrett, and performed by Rupert Degas, Charlotte Page, Chris Fairbank and David Timson. It was later re-released in an enhanced audio edition, but can still be bought as a stand-alone audio drama. This story was first re-published in prose format as part of the Angron anthology collection. The story was also published as part of the Legacies of Betrayal main series anthology novel.