It is 1958. World War II never happened. In the 1930s, the armies of the afterlife – known as Summerland – conquered the world of the living. The ruthless, immortal Summer Lords and their ectoplasmic machines rule a dark Britain with an iron fist. A gifted young medium and a bastard daughter of Harry Houdini discover a map of the Other Side that could break their power. But how do you start a revolution against rulers you cannot escape even in death?