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As he struggles to protect Euphrati Keeler, the first Saint of the Imperial Church, from the horrors of this titanic war, Garro must face his greatest enemy - his father, Mortarion, his former master and the monstrous liege-lord of the traitorous Death Guard - in a final shattering confrontation.Garro serves as a counter point to the journey of the death guard, an example of what they could have been. Perhaps published out-of-sync, and therefore lessening it’s impact, Knight of Grey is still a worthwhile read. It brings the storyline of one of the heroes of the Horus Heresy to a close, and it did so in a very satisfying way. I don’t think it's exactly essential reading unless you really love this character arc, and it doesn’t offer up any big surprises or fundamentally change anything in the broader narrative of the Siege; if you haven’t particularly enjoyed this arc before then I don’t think it will change your opinion.

What can I say about a man in the 30th Millennium, far in the future who we have followed through fire and death, rebirth and something more, apart from this: his story will be remembered.Also for the Horus Heresy, he has written The Flight of the Eisenstein, The Buried Dagger and a series of audio dramas featuring the character Nathaniel Garro, the prose versions of which have now been collected into the anthology Garro. The world-shattering Siege of Terra is drawing to a climax – the penultimate novel Echoes of Eternity gets closer by the day – but there are still a dozen stories to tell about this legendary conflict.