The smallest thing can change the path of history. The year is 1976, and the British Empire still spans the globe. Coal drives the world, and the smog of it hangs thick over the canals of London. Clara Calland is on the run. Hunted, along with her scientist mother, by Menshevik spies and Imperial soldiers, they flee Ireland for London. They must escape airships, treachery and capture. Under flooded London's canals they join the rebels who live in...