Dan Abnett is the author of the Horus Heresy novels The Unremembered Empire, Know No Fear and Prospero Burns, the last two of which were both New York Times bestsellers. He has written almost fifty novels, including the acclaimed Gaunt s Ghosts series, and the Eisenhorn and Ravenor trilogies. He scripted Macragge s Honour, the first Horus Heresy graphic novel, as well as numerous audio dramas and short stories set in the Warhammer 40,000 and Warhammer universes. He lives and works in Maidstone, Kent.

Andy Lanning, author of Legion Lost and Legion World, first teamed with Dan Abnett in the early 90's and he has proceeded to work on various Marvel and DC projects since breaking into the comic industry.

Brad Walker, the founder and CEO of The Stretching Institute, is an internationally recognized stretching and sports-injury consultant who has worked with elite-level and world champion athletes. He has written several health and exercise books, including"The Anatomy of Stretching" and "The Anatomy of Sports Injuries, " as well as articles for numerous health and fitness magazines.