The acclaimed Engines of Light Series that began with Cosmonaut Keep and Dark Light reaches its staggering conclusion in Engine City. Two hundred years ago, a starship arrived at Nova Babylonia and unloaded a cargo of encyclopaedic information from the solar system of the mid-21st century. One hundred years ago, Nova Babylonia had used that information to create a Modern Regime - a heavily industrialised civilisation ready to defend itself against the aliens whose arrival was believed to be imminent. Today, Nova Babylonia is in decline. The alien invaders never came and the Regime has fallen. Into this corrupt city arrives an outsider whose purpose is ambiguous. But businessman or spy, he is not the only visitor. War is coming to Nova Babylonia. And the gods.