The most gripping non-fiction book I have read in a very long time -- Mark Haddon, on A Heavy ReckoningA Fascinating book ? The Times, on WoundedAn engaging piece of research, history and recollection ? The Economist, on The Guinea Pig Club[A] thoughtful and ultimately uplifting analysis of the unsung heroes of our age ? IndependentMayhew's book is rich in explanation and background detail...Although this is a scary book, it is also one full of hope ? IndependentThe beauty of The Four Horsemen is how she takes her quaking readers to the edge of the abyss, encouraging them to peek into the darkness below, then gently pulls them back, explaining how the worst can be averted, by dint of carefully accumulated wisdom, generosity of spirit, hard work and sheer ingenuity . . . I was left moved and uplifted . . . [I]n this first-class example of popular science Mayhew demonstrates that's also where salvation lies. ? The Times Dr Emily Mayhew is historian in residence in the Department of Bioengineering at Imperial College London. She is the author of the Wounded trilogy: A Heavy Reckoning, The Reconstruction of Warriors, and Wounded: from Battlefield to Blighty which was shortlisted for the Wellcome Prize in 2014. She is Imperial College Internal Lead on the Paediatric Blast Injury Partnership, and co-edited The Paediatric Blast Injury Field Manual