Graham McNeill has written many Horus Heresy novels, including The Crimson King, Vengeful Spirit and his New York Times bestsellers A Thousand Sons and the novella The Reflection Crack'd, which featured in The Primarchs anthology. Graham's Ultramarines series, featuring Captain Uriel Ventris, is now six novels long, and has close links to his Iron Warriors stories, the novel Storm of Iron being a perennial favourite with Black Library fans. He has also written the Forges of Mars trilogy, featuring the Adeptus Mechanicus. For Warhammer, he has written the Warhammer Chronicles trilogy The Legend of Sigmar, the second volume of which won the 2010 David Gemmell Legend Award.

Richard Williams was the chief sportswriter of the Guardian from 1995 to 2012, having previously worked for The Times and the Independent. He was the original presenter of BBC2's The Old Grey Whistle Test and was the artistic director of the Berlin Jazz Festival from 2015-17.

Among his previous books are The Death of Ayrton Senna (1995), Racers (1997), Enzo Ferrari: A Life (2002) and The Last Road Race (2004). A Race with Love and Death is his most recent publication (Simon & Schuster, 2020).

Steve Parker is an author, editor and consultant specialising in illustrated information books on the natural world.

Steve is a Senior Scientific Fellow of the Zoological Society of London and has worked on the staff of London's Natural History Museum.

He is based in Suffolk, UK, and has written over 250 books, including dinosaur titles such Extreme Dinosaurs.