Thomas Williams uncovers the forgotten origins and untimely demise of nine kingdoms that hover in the twilight between history and fable, whose stories hum with saints and gods and miracles, with giants and battles and the ruin of cities. Why did some realms – like Wessex, Mercia, Northumbria and Gwynedd – prosper while these nine fell? Williams brings together new archaeological revelations with the few precious fragments of written sources to have survived to rebuild a lost world. In riveting detail, Williams uses Britain’s ancient landscape to resurrect a lost past where lives were lived with as much vigour and joy as in any other age, where people fought and loved and toiled and suffered grief and disappointment just as cutting as our own.