The Horus Heresy is the bestselling multi-author series from Black Library, contributed to by some of the most talented authors in tie-in fiction. We have had 21 novels so far in the series, along with several audio dramas and two limited edition novellas. The way things are going, it is a given that there will be at least as many publications in the future for the series. The question that arises is, which author should get to writing which book/legion/faction/character etc. It is a fascinating topic as each author who has contributed to the series so far has had his strengths and weaknesses in equal measure and there is an abundance of talent just waiting to be tapped into. So for this blogpost, I’m going to talk a little about that.